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<s> Chọn đáp án đúng với câu hỏi: I am often _______ school in the morning and do research or read books _______ the school library. _______ night, I stay home and prepare for my lessons.
A. at / at / At
B. in / from / On
C. to / through / In
D. out / in / For Đáp án là: B. in / from / On </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word that has the underlined part pronounced differently: favorite, lemonade, potato, soda
A. fav o rite
B. lem o nade
C. p o tato
D. s o da Đáp án là: D. s o da </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vào ngày 22/12 ở Nam Bán Cầu có thời gian ban ngày diễn ra thế nào?
A. Khó xác định.
B. Dài nhất.
C. Bằng ban đêm.
D. Ngắn nhất. Đáp án là: B. Dài nhất. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Don’t be so disappointed, Bill. You can take the driving test again,” said Helen.
A. Helen encouraged Bill to take the driving test again
B. Helen told Bill to be disappointed in order to take the driving test again
C. Helen told Bill not to be disappointed and not to take the driving test again
D. Helen said Bill not to be disappointed because of the driving test again Đáp án là: A. Helen encouraged Bill to take the driving test again </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trụ sở hiện nay của liên minh châu Âu được đặt ở
A. Pari (Pháp).
B. Matxcova (Nga).
C. Béc- lin (Đức).
D. Brucxen (Bỉ). Đáp án là: D. Brucxen (Bỉ) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Năm 1396, Hồ Quý Ly đã cho thực hiện chính sách nào dưới đây?
A. Ban hành tiền giấy “thông bảo hội sao”.
B. Thống nhất đơn vị đo lường trong cả nước.
C. Đặt phép hạn điền, nhằm hạn chế sở hữu ruộng tư.
D. Chính sách hạn nô; kiểm soát hộ tịch trên cả nước. Đáp án là: A. Ban hành tiền giấy “thông bảo hội sao”. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chỉ ra nhiệt độ tăng dần nhiệt độ sôi:
A. CH 3 CHO, C 2 H 5 OH, CH 3 COOH
B. CH 3 OH, CH 3 COOH, C 2 H 5 OH
C. CH 3 COOH, C 2 H 5 OH, CH 3 CHO
D. C 2 H 5 OH, CH 3 COOH, CH 3 CHO Đáp án là: A. CH 3 CHO, C 2 H 5 OH, CH 3 COOH </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nào sau đây không đúng khi nói về đột biến đảo đoạn?
A. Đột biến đảo đoạn có thể xảy ra ở động vật và thực vật.
B. Đột biến đảo đoạn có thể làm cho một gen nào đó đang hoạt động trở lên không hoạt động.
C. Đột biến đảo đoạn làm thay đổi chiều dài của nhiễm sắc thể.
D. Đột biến đảo đoạn có thể sẽ dẫn đến làm phát sinh loài mới. Đáp án là: C. Đột biến đảo đoạn làm thay đổi chiều dài của nhiễm sắc thể. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về đột biến mất đoạn nhiễm sắc thể, có bao nhiêu phát biểu sau đây đúng? I.Đột biến mất đoạn luôn dẫn tới làm giảm số lượng gen trên nhiễm sắc thể. II.Mất đoạn nhỏ được sử dụng để loại bỏ gen có hại ra khỏi kiểu gen của giống. III.Sử dụng đột biến mất đoạn để xác định vị trí của gen trên nhiễm sắc thể. IV.Đột biến mất đoạn thường gây hại cho thể đột biến nên không phải là nguyên liệu của tiến hóa.
A. 1
B. 3
C. 4
D. 2 Đáp án là: B. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Những bài học kinh nghiệm trong lịch sử có giá trị như thế nào đối với cuộc sống hiện tại và tương lai của con người?
A. Giúp con người tránh lặp lại sai lầm trong quá khứ.
B. Là yếu tố quyết định đến tương lai của con người.
C. Giúp con người dự báo chính xác về tương lai.
D. Giúp con người kế thừa mọi yếu tố trong quá khứ. Đáp án là: A. Giúp con người tránh lặp lại sai lầm trong quá khứ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đọc văn bản sau : Cộng hoà xã hội chủ nghĩa việt nam Độc lập – Tự do – Hạnh phúc Khu tập thể A, ngày 04 tháng 4 năm 2006 GIẤY ĐỀ NGHỊ Chúng tôi gồm các gia đình trong khu tập thể A xin kiến nghị với UBND một việc như sau: Được UBND cho phép, các hộ gia đình trong khu tập thể chúng tôi đã đóng góp tiền để tu sửa, cải tạp khoảng sân phía trước khu nhà, trồng cây tạo không gian xanh làm nơi vui chơi cho các cháu thiếu nhi. Nhưng gần đây, một số hộ ở tầng một đã lấn chiếm làm nơi kinh doanh, bán hàng, thậm chí còn đặt bếp than đun nấu vừa gây mất mĩ quan vừa gây ô nhiễm môi trường, các cháu thiếu nhi không có chỗ vui chơi... Vì thế, chúng tôi viết giấy này đề nghị với chính quyền địa phương cần có biện pháp giải quyết kịp thời để trả lại chỗ vui chơi cho các cháu, nhất là khi mùa nghỉ hè lại đang đến gần. Thay mặt các gia đình (Kí tên ) Nguyễn Anh H. Văn bản trên còn thiếu mục nào?
A. Nơi gửi
B. Quốc hiệu, tiêu ngữ, tên văn bản
C. Địa điểm làm giấy đề nghị và ngày thang
D. Nội dung đề nghị, kí tên. Đáp án là: A. Nơi gửi </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “The tiny phones coming in are having a very big (70)............
A. impression
B. perception
C. impact
D. image Đáp án là: C. impact </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hiện nay, mạng điện xoay chiều sử dụng trong các hộ gia đình ở Việt Nam có điện áp hiệu dụng và tần số tương ứng là
A. 220 V và 50 Hz
B. 220 √2 V và 25 Hz
C. 220 V và 25 Hz
D. 220 √2 V và 50 Hz Đáp án là: A. 220 V và 50 Hz </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy chất nào sau đây khi tác dụng với dung dịch AgNO 3 /NH 3 dư, t° đều tạo sản phẩm kết tủa
A. fructozo, glucozo, đimetyl axetilen, vinyl axetilen, propanal.
B. axetilen, anlyl bromua, fructozo, mantozơ, but-l-in.
C. saccarozo, mantozo, đimetyl axetilen, vinyl axetilen, but-l-in
D. benzyl clorua, axetilen, glucoza, fructozơ, mantozơ. Chọn đáp án B A sai vì có đimetyl axetilen C sai vì có đimetyl axetilen, saccarozo D sai vì có benzyl clorua Đáp án là: B. axetilen, anlyl bromua, fructozo, mantozơ, but-l-in. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngâm một dây điện trở vào một bình cách nhiệt đựng 2lít nước. Cho dòng điện chạy qua dây này trong một thời gian, nhiệt độ nước trong bình tăng từ 20 0 C lên 80 0 C. Nhiệt dung riêng của nước là 4200J/kg.K. Phần điện năng mà dòng điện đã truyền cho nước là:
A. 504 000J
B. 540 000J
C. 450 000J
D. 4 05000J. Đáp án là: A. 504 000J </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phương pháp Sử học nào sau đây nghiên cứu sự vật, hiện tượng theo các giai đoạn phát triển cụ thể của nó (hình thành, phát triển và tiêu vong)?
A. Phương pháp lô-gích.
B. Phương pháp liên ngành.
C. Phương pháp lịch sử.
D. Phương pháp đồng đại. Đáp án là: C. Phương pháp lịch sử. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The game (4) _______ for neither mathematical ability nor (5) ________ knowledge and there are just a few sentences of straightforward instructions to read before you can play.
A. general
B. normal
C. usual
D. ordinary Đáp án là: A. general </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự hình thành hệ thống xã hội chủ nghĩa thế giới trên lĩnh vực kinh tế được đánh dấu bằng sự kiện nào?
A. Liên Xô trở thành cường quốc công nghiệp thứ hai thế giới
B. Hội đồng tương trợ kinh tế (SEV) được thành lập
C. Các nước Đông Âu hoàn thành cuộc cách mạng dân chủ nhân dân
D. Các nước Đông Âu bước vào thời kì xây dựng chủ nghĩa xã hội Đáp án là: B. Hội đồng tương trợ kinh tế (SEV) được thành lập </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lựa chọn đáp án đúng nhất:Thay a bằng chữ số thích hợp để 81963a là số chẵn chia hết cho 5?
A. a=5
B. a = 8
C. a = 7
D. a = 0 Đáp án là: D. a = 0 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vì sao câu tục ngữ: Chớp đông nhay nháy, gà gáy thì mưa có thể coi là một văn bản không?
A. Vì câu tục ngữ có sự hoàn chỉnh, thống nhất cả về nội dung và hình thức.
B. Vì câu tục ngữ đã đúc kết lại một kinh nghiệm quý báu trong cuộc sống.
C. Vì câu tục ngữ phản ánh chân thực những gì diễn ra trong cuộc sống.
D. Vì câu tục ngữ có tính liên kết chặt chẽ giữa các vế câu sau. Đáp án là: A. Vì câu tục ngữ có sự hoàn chỉnh, thống nhất cả về nội dung và hình thức. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vì sao Đại hội đại biểu lần II của Đảng đánh dấu một mốc quan trọng trong quá trình lãnh đạo và trưởng thành của Đảng ta?
A. Đưa Đảng tiếp tục hoạt động cách mạng.
B. Đảng ta tiếp tục lãnh đạo cuộc kháng chiến.
C. Đảng ta đã hoạt động công khai.
D. Đưa Đảng ra hoạt động công khai và đổi tên Đảng thành Đảng Lao động Việt Nam. Đáp án là: D. Đưa Đảng ra hoạt động công khai và đổi tên Đảng thành Đảng Lao động Việt Nam </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 16, cho biết phần lớn dân cư thuộc nhóm ngữ hệ Nam Đảo tập trung ở vùng nào sau đây?
A. Tây Nguyên.
B. Đông Nam Bộ.
C. Đồng bằng sông Cửu Long.
D. Duyên hải Nam Trung Bộ. Đáp án là: A. Tây Nguyên. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một mạch dao động ở máy vào của một máy thu thanh gồm cuộn thuần cảm có độ tự cảm 3 μ H và tụ điện có điện dung biên thiên trong khoảng từ 10 p F đến 500 p F. Biết rằng, muốn thu được sóng điện từ thì tần số riêng của mạch dao động phải bằng tần số của sóng điện từ cần thu ( để có cộng hưởng). Trong không khí, tốc độ truyền sóng điện từ là 3.10 8 m / s, máy thu này có thể thu được sóng điện từ có bước sóng trong khoảng
A. Từ 100 m đến 730 m
B. Từ 10 m đến 73 m
C. Từ 1 m đến 73 m
D. Từ 10 m đến 730 m Đáp án là: B. Từ 10 m đến 73 m </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35. Popular discussions of the future often focus on the way (31) ________ will affect our lives – cars that drive themselves, computerized (32) ________that think like humans and vacations on the moon. Some of these (33) ________may sound like absolute fantasy. However, if the developments of recent years are any indication, such predictions are probably not fancy at all. Only a few decades ago, most of us thought (34) ________shopping, computerized body parts and virtual reality games were science (35) ________. Now, these things are here.
A. technology
B. economy
C. politics
D. mathematics Đáp án là: A. technology </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: I wish my summer holiday longer.
A.will be
B. is
C. were
D.has been Đáp án là: A.will be </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phương pháp không dùng để tách biệt và tinh chế các chất hữu cơ là:
A. Phương pháp chưng cất.
B. Phương pháp chiết.
C. Phương pháp kết tinh.
D. Phương pháp sunfat Đáp án là: D. Phương pháp sunfat </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho sơ đồ: Vậy A, B, C, D lần lượt là
A. P 2 O 5, Ca 3 P 2, PH 3, H 3 PO 4.
B. CO, CaO, CaCl 2, CaOCl 2.
C. CaSiO 2, CaO, CaCl 2. CaOCl 2.
D. P, Ca 3 P 2, PH 3, H 3 PO 4. Đáp án là: D. P, Ca 3 P 2, PH 3, H 3 PO 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm số mà 20% của nó bằng 112
A. 560
B. 460
C. 580
D. 350 Đáp án là: A. 560 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho Mg có hai đồng vị Mg 12 24 ; Mg 12 25. Cho Clo có hai đồng vị Cl 17 35 ; Cl 17 37. Hỏi có tối đa bao nhiêu công thức dạng MgCl 2?
A. 6.
B. 4.
C. 8.
D. 12. Đáp án là: A. 6. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Calcium (kí hiệu là Ca) là một loại khoáng chất có vai trò rất quan trọng trong cơ thể người. Trong cơ thể, calcium chiếm 1,5 – 2% trọng lượng, 99% lượng calcium tồn tại trong xương, răng, móng và 1% trong máu. Calcium kết hợp với phosphorus là thành phần cấu tạo cơ bản của xương và răng, làm cho xương và răng chắc khỏe. Khối lượng riêng của calcium kim loại là 1,55 g/cm 3. Giả thiết rằng, trong tinh thể calcium, các nguyên tử là những hình cầu chiếm 74% thể tích tinh thể, phần còn lại là khe rỗng. Cho nguyên tử khối của calcium là 40 amu. Bán kính nguyên tử calcium là
A. 2,02.10 -6 cm.
B. 1,96.10 -6 cm.
C. 1,86.10 -6 cm.
D. 1,67.10 -6 cm. Đáp án là: B. 1,96.10 -6 cm. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to indicate the word that differs from the other three in the position of stress in each of the following questions. (Chọn đáp án A, B, C hoặc D để tìm từ có trọng âm khác với ba từ còn lại)
A. basket s
B. book s
C. roof s
D. change s Đáp án là: D. change s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Định luật phân li độc lập góp phần giải thích hiện tượng
A. Biến dị tổ hợp vô cùng phong phú ở loài giao phối.
B. Hoán vị gen.
C. Liên kết gen hoàn toàn.
D. Các gen phân li trong giảm phân và tổ hợp trong thụ tinh. Đáp án là: A. Biến dị tổ hợp vô cùng phong phú ở loài giao phối. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân gây ô nhiễm nguồn nước ngọt là
A. khai thác rừng bừa bãi
B. nạn du canh du cư
C. lượng chất thải công nghiệp tăng
D. săn bắt động vật quá mức Đáp án là: C. lượng chất thải công nghiệp tăng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhật Bản đã rút ngắn được khoảng cách và vươn lên dẫn đầu thế giới trong nhiều ngành kinh tế chủ yếu là do
A. Người lao động Nhật Bản đông đảo, cần cù, chịu khó.
B. Không nhập công nghệ mới từ bên ngoài.
C. Phát huy được tính tự lập, tự cường.
D. Tích cực nhập khẩu công nghệ, kĩ thuật của nước ngoài. Đáp án là: D. Tích cực nhập khẩu công nghệ, kĩ thuật của nước ngoài </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một hộp có 5 chiếc thẻ cùng loại, mỗi thẻ được ghi một trong các số 1, 2, 3, 4, 5; hai thẻ khác nhau thì ghi số khác nhau. Rút ngẫu nhiên một thẻ rồi bỏ lại thẻ vào hộp.
Sau 25 lần rút thẻ liên tiếp, hãy ghi kết quả thống kê theo mẫu sau:
Lần 1
Số 3
Lần 6
Số 5
Lần 11
Số 3
Lần 16
Số 2
Lần 21
Số 1
Lần 2
Số 1
Lần 7
Số 2
Lần 12
Số 2
Lần 17
Số 1
Lần 22
Số 5
Lần 3
Số 2
Lần 8
Số 3
Lần 13
Số 2
Lần 18
Số 2
Lần 23
Số 3
Lần 4
Số 3
Lần 9
Số 4
Lần 14
Số 1
Lần 19
Số 3
Lần 24
Số 4
Lần 5
Số 4
Lần 10
Số 5
Lần 15
Số 5
Lần 20
Số 5
Lần 25
Số 5
Tính xác suất thực nghiệm Xuất hiện số 1
A. 0,4
B. 0,14
C. 0,16
D. 0, 25 Đáp án là: C. 0,16 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các vật liệu sau thường dùng làm vật cách điện:
A. Sứ, kim loại, nhựa, cao su
B. Sơn, gỗ, chì, gang, sành
C. Than, gỗ, đồng, kẽm, nilông
D. Nhựa, nilông, sứ, cao su Đáp án là: D. Nhựa, nilông, sứ, cao su </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hết 4,4 gam CH 3 COOC 2 H 5 cần vừa đủ V lít O 2 (đktc). Giá trị của V là:
A. 11,2.
B. 13,44.
C. 8,96.
D. 5,6. Đáp án là: D. 5,6 </s> | [
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3... | [
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<s> Chọn đáp án đúng với câu hỏi: Hệ tuần hoàn kép có ở những động vật nào
A. Chỉ có ở lưỡng cư, bò sát, chim và thú
B. Chỉ có ở cá, lưỡng cư và bò sát
C. Chỉ có ở mực ống, bạch tuộc, giun đốt, chân đầu và cá
D. Chỉ có ở mực ống, bạch tuộc, giun đốt và chân đầu Đáp án là: A. Chỉ có ở lưỡng cư, bò sát, chim và thú </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lưu huỳnh trong chất nào sau đây vừa có tính oxi hoá vừa có tính khử?
A. Na 2 SO 4
B. SO 2
C. H 2 S
D. H 2 SO 4 Đáp án là: B. SO 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lựa chọn đáp án đúng nhất:Trung bình cộng của ba số là 78,56. Biết số thứ nhất là 66,72, số thứ hai hơn số thứ nhất 18,25 đơn vị. Tìm số thứ ba.
A. 83,98
B. 83,99
C. 84,98
D. 84,99 Đáp án là: B. 83,99 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho \(\widehat A = 45^\circ \), chọn đáp án SAI trong các đáp án dưới đây?
A. sin A = \(\frac{{\sqrt 3 }}{2}\);
B. cos A = \(\frac{{\sqrt 2 }}{2}\);
C. tan A = 1;
D. cot A = 1. Đáp án là: A. sin A = \(\frac{{\sqrt 3 }}{2}\); </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn phương án sai.
A. Quỹ đạo là một đường thẳng mà trên đó chất điểm chuyển động
B. Một đường cong mà trên đó chất điểm chuyển động gọi là quỹ đạo
C. Quỹ đạo là một đường mà chất điểm vạch ra trong không gian khi nó chuyển động
D. Cả A và B Đáp án là: D. Cả A và B </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc đơn treo vào đầu một sợi dây mảnh bằng kim loại, vật nặng có khối lượng riêng D. Khi dao động nhỏ trong bình chân không thì chu kì dao động là T. Bỏ qua mọi ma sát, khi dao động nhỏ trong một chất khí có khối lượng riêng ε D ε < < 1 thì chu kỳ dao động là.
A. T 1 + ε 2
B. T 1 + ε 2
C. T 1 − ε 2
D. T 1 − ε 2 Đáp án là: A. T 1 + ε 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Viết phân số âm năm phần tám
A. \[\frac{5}{8}\]
B. \[\frac{8}{{ - 5}}\]
C. \[\frac{{ - 5}}{8}\]
D. \[ - 5,8\] Đáp án là: C. \[\frac{{ - 5}}{8}\] </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về tiến hoá nhỏ, phát biểu nào sau đây đúng?
A. Tiến hóa nhỏ diễn ra trong phạm vi tương đối rộng, thời gian tương đối dài
B. Tiến hóa nhỏ diễn ra ở cấp độ cá thể, kết quả dẫn tới hình thành loài mới
C. Có thể nghiên cứu tiến hóa nhỏ bằng các thực nghiệm khoa học
D. Tiến hóa nhỏ là quá trình tiến hóa của các loài vi sinh vật Đáp án là: C. Có thể nghiên cứu tiến hóa nhỏ bằng các thực nghiệm khoa học </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng?
A. Để mắt tránh bị khô do thiếu vitamin A nên ăn cà rốt, gấc, cà chua.
B. Các amin đều không độc, được sử dụng trong chế biến thực phẩm.
C. Dùng nước vôi dư để xử lý các ion kim loại nặng gây ô nhiễm nguồn nước.
D. Dùng nước đá khô để bảo quản thực phẩm là phương pháp an toàn thực phẩm. Đáp án là: B. Các amin đều không độc, được sử dụng trong chế biến thực phẩm. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: 38‰ (năm 2005) là tỉ suất sinh thô của
A. nhóm nước phát triển
B. thế giới
C. châu Phi
D. nhóm nước đang phát triển Đáp án là: C. châu Phi </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the best answer. Can you show me_____way to _______ station?
A.the-the
B.a-a
C.the-an
D.a-the Đáp án là: A.the-the </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A schoolmaster from England, Rowland Hill (4) ________ the adhesive postage stamp in 1837, an act for (5) _______ he was knighted.
A. operated
B. worked
C. invented
D. examined Đáp án là: C. invented </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Độ điện li của dung dịch axit HCOOH 0,005M (biết trong dung dịch có [H + ] = 0,001M) là
A. 0,50
B. 0,20
C. 0,10
D. 0,01 Đáp án là: B. 0,20 </s> | [
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31214,
31500,
2... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to indicate the word that differs from the other three in the position of stress in each of the following questions. (Chọn đáp án A, B, C hoặc D để tìm từ có trọng âm khác với ba từ còn lại)
A. smil ed
B. invad ed
C. conceiv ed
D. recycl ed Đáp án là: B. invad ed </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I said that I had met her___________.
A. yesterday
B. the previous day
C. the day
D. the before day Đáp án là: B. the previous day </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Những loại quả có khả năng tự phát tán hầu hết thuộc nhóm nào dưới đây?
A. Quả mọng
B. Quả hạch
C. Quả khô nẻ
D. Quả khô không nẻ Đáp án là: C. Quả khô nẻ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các ancol sau: CH 3 -CH 2 -CH 2 -OH (1); (CH 3 ) 2 CH-OH (2); CH 3 -CH(OH)-CH 2 -OH (3); CH 3 -CH(OH)-CH(CH 3 )2 (4). Dãy gồm các ancol khi tách nước chỉ cho một olefin duy nhất là:
A. (1), (2).
B. (1), (2), (3).
C. (1), (2), (4).
D. (2), (3). Đáp án là: A. (1), (2). </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở cua, giáp đầu – ngực chính là
A. mai.
B. tấm mang
C. càng
D. mắt Đáp án là: A. mai. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Từ một loại bột gỗ chứa 60% xenlulozơ được dùng làm nguyên liệu sản xuất ancol etylic. Nếu dùng 1 tấn bột gỗ trên có thể điều chế được bao nhiêu lít ancol 70 0. Biết hiệu suất của quá trình điều chế là 70%, khối lượng riêng của ancol nguyên chất là 0,8 g/ml.
A. 420 lít.
B. 450 lít.
C. 456 lít.
D. 426 lít. Đáp án là: D. 426 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân nào làm ô nhiễm không khí ở đới ôn hoà?
A. Khói bụi từ các phương tiện giao thông, từ các nhà máy.
B. Xả rác bữa bãi nơi công cộng.
C. Khói bụi từ các vùng khác bay tới.
D. Chặt phá rừng quá mức, tài nguyên đất bị bạc màu. Đáp án là: A. Khói bụi từ các phương tiện giao thông, từ các nhà máy. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các hoạt động kinh tế, bản đồ không dùng để
A. quy hoạch các trung tâm công nghiệp, khu đô thị.
B. quy hoạch phát triển vùng, các công trình thuỷ lợi.
C. xây dựng các phương án phòng thủ và tấn công.
D. thiết kế các tuyến đường giao thông hay du lịch. Đáp án là: C. xây dựng các phương án phòng thủ và tấn công. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hệ thống công nghiệp của nước ta hiện nay gồm có
A. đầy đủ các ngành công nghiệp thuộc các lĩnh vực và ngành khác nhau.
B. các trung tâm công nghiệp có quy mô rất lớn, lớn, trung bình và nhỏ.
C. các cơ sở nhà nước, ngoài nhà nước và cơ sở có vốn đầu tư nước ngoài.
D. có nhiều ngành công nghiệp trọng điểm, vùng công nghiệp trọng điểm. Đáp án là: B. các trung tâm công nghiệp có quy mô rất lớn, lớn, trung bình và nhỏ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở nước ta, việc hình thành và mở rộng các vùng chuyên canh cây công nghiệp ở miền núi và trung du phải gắn liền với việc
A. đẩy mạnh thâm canh.
B. cải tạo đất đai.
C. trồng và bảo vệ vốn rừng.
D. giải quyết vấn đề lương thực. Đáp án là: C. trồng và bảo vệ vốn rừng. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trộn KMnO 4, KClO 3 với một lượng bột MnO 2 trong bình kín thu được hỗn hợp rắn X. Lấy 52,55 gam X đem nung nóng, sau một thời gian thu được hỗn hợp rắn Y (trong đó có 0,2 mol KCl và KCl chiếm 36,315% khối lượng) và V lít O 2. Biết rằng KClO 3 nhiệt phân hoàn toàn. Sau đó, cho toàn bộ Y tác dụng hoàn toàn với HCl đặc, dư, đun nóng, sau phản ứng cô cạn dung dịch thu được 51,275 gam hỗn hợp muối khan. Hiệu suất quá trình nhiệt phân KMnO 4 là
A. 62,5%
B. 91,5%
C. 75,0%
D. 80,0% Đáp án là: D. 80,0% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép trừ 85371- 9046 là
A. 86335
B. 76325
C. 76335
D. 86325 Đáp án là: B. 76325 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Liên Bang Nga đóng vai trò chính trong việc tạo dựng Liên bang Xô viết trở thành cường quốc, điều đó được thể hiện qua
A. tốc độ tăng trưởng kinh tế thấp.
B. nhiều ngành công nghiệp vươn lên vị trí hàng đầu thế giới.
C. xây dựng chính quyền hùng mạnh.
D. cơ cấu kinh tế có sự chuyển dịch mạnh mẽ. Đáp án là: B. nhiều ngành công nghiệp vươn lên vị trí hàng đầu thế giới. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Năm 2004, giá trị sản lượng nông nghiệp của Hoa Kì chiếm
A. 0,6% GDP
B. 0,7% GDP
C. 0,8% GDP
D. 0,9% GDP Đáp án là: D. 0,9% GDP </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Địa hình núi trẻ có những đặc điểm nào sau đây?
A. Đỉnh tròn, sườn dốc
B. Đỉnh tròn, sườn thoải
C. Đỉnh nhọn, sườn dốc
D. Đỉnh nhọn, sườn thoải Đáp án là: C. Đỉnh nhọn, sườn dốc </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hệ phương trình: (x−my=0mx−y=m+1). Hệ phương trình có vô số nghiệm khi:
A. m=±1
B. m=0
C. m=−1
D. m=0 hoặc m=−1 Đáp án là: C. m=−1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Jack had to skip breakfast ; otherwise, he will be late for class.
A. skip breakfast
B. otherwise
C. will be
D. for class Đáp án là: C. will be </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nam giới bị bệnh lậu thường có triệu chứng nào sau đây?
A. Đái buốt
B. Tiểu tiện có máu lẫn mủ
C. Phù nề, đỏ miệng sáo
D. Tất cả các đáp án trên Đáp án là: D. Tất cả các đáp án trên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phương trình 5(x – 3) - 4 = 2(x – 1) +7 có tập nghiệm là:
A. S = { 6}
B. {1}
C. {8}
D. {-8}. Đáp án là: C. {8} </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trường hợp nào sau đây không gây ô nhiễm tiếng ồn?
A. Gần đường ray xe lửa
B. Gần sân bay
C. Gần ao hồ
D. Gần đường cao tốc Đáp án là: C. Gần ao hồ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong xu thế hội nhập của nền kinh tế thế giới, nguồn lực có tính chất định hướng phát triển có lợi nhất trong việc xây dựng các mối quan hệ giữa các quốc gia là
A. Tài nguyên thiên nhiên.
B. Vốn.
C. Vị trí địa lí.
D. Thị trường. Đáp án là: B. Vốn. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Pháp tuyến là đường thẳng
A. tạo với tia tới một góc vuông tại điểm tới.
B. tạo với mặt phân cách giữa hai môi trường một góc vuông tại điểm tới.
C. tạo với mặt phân cách giữa hai môi trường một góc nhọn tại điểm tới.
D. song song với mặt phân cách giữa hai môi trường. Đáp án là: B. tạo với mặt phân cách giữa hai môi trường một góc vuông tại điểm tới. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 300 ml dung dịch Ba(OH) 2 0,5M vào 200 ml dung dịch chứa H 2 SO 4 0,2M và Al 2 (SO 4 ) 3 0,15M. Sau khi kết thúc các phản ứng, thu được m gam kết tủa. Giá trị của m là
A. 36,51 gam
B. 33,41 gam
C. 34,97 gam
D. 31,85 gam Đáp án là: D. 31,85 gam </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC vuông tại A có ∠C = α. Câu nào sau đây là đúng?
A. sinα=(AB)/(AC)
B. sinα=(AC)/(AB)
C. sinα=(AB)/(BC)
D. sinα=(AC)/(BC) Đáp án là: C. sinα=(AB)/(BC) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: There/ will/ a lot of/ interesting/ activities/ do/ this program.
A. There will be a lot of interesting activities to do in this program.
B. There will be a lot of interesting activities doing on this program.
C. There will be a lot of interesting activities do in this program.
D. There will be a lot of interesting activities to do on this program. Đáp án là: A. There will be a lot of interesting activities to do in this program. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Derek was wearing _________ at the party.
A. the most ridiculous wide, yellow, silk tie
B. very ridiculous wide, yellow, silk tie
C. a tie, yellow, wide and ridiculous
D. a yellow, silk ridiculous tie Đáp án là: A. the most ridiculous wide, yellow, silk tie </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu số hạng trong khai triển (y − 2x^2y)^4 có dạng Ax^my^n sao cho m + n = 6?
A. 0;
B. 1;
C. 2;
D. 3. Đáp án là: B. 1; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Công thức tính diện tích xung quanh của hình nón có đường sinh l và bán kính đường tròn đáy r là :
A.Sx_q=2πrl
B.Sx_q=2πr^2l
C.Sx_q=πrl
D.Sx_q=πr^2l Đáp án là: A.Sx_q=2πrl </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tại Nghệ An, chính quyền Xô viết được thành lập đầu tiên ở huyện nào?
A. Thanh Chương, Nam Đàn.
B. Anh Sơn, Nghi Lộc.
C. Hưng Nguyên, Diễn Châu.
D. Can Lộc, Nghi Xuân. Đáp án là: A. Thanh Chương, Nam Đàn. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm tập hợp các tâm I của mặt cầu (S):x^2+y^2+z^2+2(1−m)x+2(3−2m)y2(m−2)z+5m^2−9m+6=0
A. Đường thẳng: x+1=(y+3)/2=2−z
B. Phần đường thẳng: x+1=(y+3)/2=2−z với x<0 ∨ x>7
C. Phần đường thẳng: x+1=(y+3)/2=2−z với 0<x<7
D. Phần đường thẳng: x+1=(y+3)/2=z−2 với x<1 ∨ x>8 Đáp án là: B. Phần đường thẳng: x+1=(y+3)/2=2−z với x<0 ∨ x>7 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Find the word which has a different sound in the part underlined.
A. t a lk
B. s a lt
C. s au sage
D. c au se Đáp án là: C. s au sage </s> | [
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<s> Chọn đáp án đúng với câu hỏi: By the year 2050, many people currently employed _____ their jobs
A. have lost
B. will be losing
C. will have lost
D. are losing Đáp án là: C. will have lost </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số dân và tỉ lệ dân thành thị có xu hướng nào sau đây?
A. Số dân thành thị tăng, tỉ lệ dân thành thị giảm.
B. Số dân thành thị tăng, tỉ lệ dân thành thị tăng.
C. Số dân thành thị giảm, tỉ lệ dân thành thị giảm.
D. Số dân thành thị giảm, tỉ lệ dân thành thị tăng. Đáp án là: B. Số dân thành thị tăng, tỉ lệ dân thành thị tăng. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mạch dao động LC lí tưởng đang có dao động điện từ tự do, cường độ dòng điện trong mạch và hiệu điện thế giữa hai bản tụ điện lệch pha nhau một góc bằng
A. π 4
B. π
C. π 2
D. 0 Đáp án là: C. π 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho phản ứng: 2 K C l O 3 r → t 2 K C l r + 3 O 2 k Yếu tố không làm ảnh hưởng tới tốc độ phản ứng trên là
A. nhiệt độ
B. xúc tác
C. áp suất
D. kích thước tinh thể KCLO 3 Đáp án là: C. áp suất </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một ô tô khối lượng m di chuyển với vận tốc không đổi đi qua đỉnh của cầu vồng lên. Phản lực pháp tuyến N của mặt đường lên ô tô tại điểm đó là:
A. N>mg
B. N<mg
C. N=mg
D. Không thể trả lời được vì còn phụ thuộc vận tốc Đáp án là: B. N<mg </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nghĩa nào dưới đây không phải của hiện tượng hoán vị gen?
A. Làm tăng số biến dị tổ hợp, cung cấp nguyên liệu cho quá trình chọn giống và tiến hoá.
B. Giải thích cơ chế của hiện tượng chuyển đoạn tương hỗ trong đột biến cấu trúc nhiễm sắc thể.
C. Tái tổ hợp lại các gen quý trên các NST khác nhau của cặp tương đồng, tạo thành nhóm gen liên kết.
D. Là cơ sở cho việc lập bản đồ gen. Đáp án là: B. Giải thích cơ chế của hiện tượng chuyển đoạn tương hỗ trong đột biến cấu trúc nhiễm sắc thể. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thời Văn Lang, ngoài việc đúc lưỡi cày, vũ khí... những người thợ thủ công còn biết đúc
A. Cuốc.
B. Xẻng.
C. Trống đồng, thạp đồng.
D. Dao. Đáp án là: C. Trống đồng, thạp đồng. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Càng lên cao nói chuyện càng khó nghe hơn vì sao?
A. Vì càng lên cao nhiệt độ càng giảm
B. Vì càng lên cao áp suất khí quyển càng giảm
C. Vì càng lên cao không khí càng loãng
D. Vì càng lên cao gió thổi càng mạnh Đáp án là: C. Vì càng lên cao không khí càng loãng </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Lấy 21,33 gam cao su isopren đã được lưu hóa đem đốt cháy hoàn toàn bằng oxi vừa đủ, sau phản ứng ngưng tụ hết hơi nước thì còn lại 34,272 lít khí (đktc). Trung bình cứ bao nhiêu mắt xích isopren thì có 1 cầu nối đisunfua (-S-S-)?
A. 23
B. 18
C. 46
D. 21 Đáp án là: D. 21 </s> | [
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đường lối kháng chiến chống thực dân Pháp của Đảng (12/1946) đã phát huy đường lối đấu tranh nào của dân tộc ta?
A. Chiến tranh nhân dân.
B. Chiến tranh đánh nhanh thắng nhanh.
C. Chiến tranh tâm lý.
D. Chiến tranh tranh thủ sự giúp đỡ hoàn toàn bên ngoài. Đáp án là: A. Chiến tranh nhân dân. </s> | [
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1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Câu ca dao, tục ngữ nào KHÔNG được nhắc tới trong văn bản? Cầu Đông sương sớm, quán Giò trăng khuya. Dẫu không thanh lịch cũng người Thượng Kinh. Kén hồng Bạch Hạc cho lòng ai vui.
A. Khéo lẻo tay nghể, đất lề Kẻ Chợ.
B. Sông Tô nước chảy quanh co
C. Chẳng thơm cũng thể hoa nhài
D. Gắng công kén được cốm Vòng Đáp án là: B. Sông Tô nước chảy quanh co </s> | [
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29901,
9243,
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5777,
1146,
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5291,
31214,
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302... | [
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1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Biểu đồ thích hợp thể hiện cơ cấu giá trị sản xuất công nghiệp theo thành phần kinh tế của Đông Nam Bộ năm 2000 và năm 2010 là
A. Biểu đồ cột.
B. Biểu đồ đường.
C. Biểu đồ tròn.
D. Biểu đồ miền. Đáp án là: C. Biểu đồ tròn. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
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865,
325,
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274,
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298,
228,
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29875,
29901,
350,
347,
31500,
207,
140,
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29871,
30128,
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31500,
30712,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: A. h omemade B. ve h icle C. h appy D. h andy
A. h omemade
B. ve h icl
C. h appy
D. h andy Đáp án là: B. ve h icle </s> | [
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1,
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319,
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331,
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350,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trái Đất có dạng hình gì?
A. Hình tròn.
B. Hình vuông.
C. Bầu dục.
D. Hình cầu. Đáp án là: D. Hình cầu </s> | [
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3... | [
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1,
1,
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1,
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Con sông nào gắn liền với nền văn hóa khởi nguồn của Ấn Độ?
A. Sông Ấn
B. Sông Hằng
C. Sông Gôđavari
D. Sông Namada Đáp án là: A. Sông Ấn </s> | [
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1,
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29901,
1281,
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207,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Điều nào sau đây không đúng khi nói về chất béo?
A. Không tan trong nước, nhẹ hơn nước nhưng tan nhiều trong benzen, hexan, clorofom,...
B. Tham gia phản ứng thủy phân trong môi trường axit, phản ứng xà phòng hóa và phản ứng ở gốc hiđrocacbon.
C. Ở trạng thái lỏng hoặc rắn trong điều kiện thường.
D. Dầu ăn và mỡ bôi trơn có cùng thành phần nguyên tố. Đáp án là: D. Dầu ăn và mỡ bôi trơn có cùng thành phần nguyên tố </s> | [
1,
1,
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678,
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865,
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29901,
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1055,
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1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Với mọi x≠(π)/2+kπ (k∈Z), đạo hàm cấp hai của hàm số y = tanx là:
A. (2sinx)/(cos^3x);
B. -(2sinx)/(cos^3x);
C. 1/(cos^2x);
D. -1/(cos^2x). Đáp án là: A. (2sinx)/(cos^3x); </s> | [
1,
1,
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30128,
29976,
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921,
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6802,... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Xu hướng hòa hoãn Đông - Tây bắt đầu xuất hiện vào thời gian nào?
A. Đầu những năm 70 của thế kỉ XX.
B. Đầu những năm 60 của thế kỉ XX.
C. Đầu những năm 80 của thế kỉ XX.
D. Đầu những năm 90 của thế kỉ XX. Đáp án là: A. Đầu những năm 70 của thế kỉ XX. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
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298,
228,
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29875,
29901,
1060,
29884,
22888,
207,
158,
29877,
207,
158,
30103,
865,
5089,
30... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Be quiet! He hasn't _______ speaking.
A. failed
B. intended
C. tended
D. finished Đáp án là: D. finished </s> | [
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940,
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13590,... | [
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