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<s> Chọn đáp án đúng với câu hỏi: A: ―Did you have to do a lot of preparation for the meeting? B: ―________________ with the board, I reviewed all the proposals again.
A. Until I was meeting
B. Prior to meeting
C. By the time I met
D. Subsequently meeting Đáp án là: B. Prior to meeting </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Với k∈Z, phương trình cos^22x+cos2x−3/4=0 có nghiệm là
A. x=kπ.
B. x=k2π.
C. x=±(π)/6+kπ.
D. x=±(2π)/3+k2π. Đáp án là: C. x=±(π)/6+kπ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên tử Cu có 35 electron ở vỏ nguyên tử. Điện tích hạt nhân của nguyên tử đồng (theo đơn vị C) là
A. +79.
B. -79.
C. - 5,607.10 -1 8 C.
D. +5,607.10 -1 8 C. Đáp án là: D. +5,607 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hurry up or we will miss the train.
A. If you will hurry up, you won’t miss the train.
B. If you hurry up, you will miss the train.
C. If you don’t hurry up,you will miss the train.
D. If you won’t hurry up, you miss the train. Đáp án là: C. If you don’t hurry up,you will miss the trai... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 22,72 gam hỗn hợp gồm Fe, FeO, Fe 2 O 3 và Fe 3 O 4 phản ứng hết với dung dịch HNO 3 loãng, dư thu được V lít khí NO (duy nhất ở đktc) và dung dịch X. Cô cạn dung dịch X thu được 77,44 gam muối khan. Giá trị của V là:
A. 2,688 lít.
B. 5,600 ... | [
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<s> Chọn đáp án đúng với câu hỏi: Nhiệm vụ trọng tâm nhất của Liên Xô trong công cuộc xây dựng xã hội chủ nghĩa ( 1925 – 1941 ) là gì?
A. Khôi phục và phát triển kinh tế.
B. Tiến hành công nghiệp hóa xã hội chủ nghĩa.
C. Cải tạo nền nông nghiệp lạc hậu.
D. Phát trie... | [
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<s> Chọn đáp án đúng với câu hỏi: Phép chia a : b thực hiện được khi:
A.b là số tự nhiên bất kì
B.b = 0
C.b ≠ 0
D.b ≠ 1 Đáp án là: C.b ≠ 0 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận xét nào sau đây không đúng khi đánh giá về hướng tiến công chiến lược của quân đội Việt Nam trong đông-xuân 1953-1954?
A. Đánh vào những nơi có tầm quan trọng về chiến lược mà địch tương đối yếu
B. Mục đích là để phá khô... | [
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<s> Chọn đáp án đúng với câu hỏi: Gọi M, m lần lượt là giá trị lớn nhất và nhỏ nhất của hàm số y=√(5−4x) trên đoạn (−1; 1). Khi đó M−m bằng
A. 8
B. -8
C. -2
D. 2 Đáp án là: D. 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X gồm Al, Fe 2 O 3 có khối lượng 21,67 gam. Tiến hành phản ứng nhiệt nhôm hỗn hợp X trong điều kiện không có không khí. Hòa tan hoàn toàn hỗn hợp chất rắn sau phản ứng bằng dung dịch NaOH dư thu được 2,016 lít H 2 (đktc) va... | [
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<s> Chọn đáp án đúng với câu hỏi: Một loài thú, cho con đực mắt trắng, đuôi dài giao phối với con cái mắt đỏ, đuôi ngắn (P), thu được F 1 có 100% con mắt đỏ, đuôi ngắn. Cho F 1 giao phối với nhau, thu được F 2 có 50% cá thể cái mắt đỏ, đuôi ngắn; 21% cá thể đực ma... | [
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<s> Chọn đáp án đúng với câu hỏi: Dòng nào nêu đúng các tác phẩm được xếp vào loại trào phúng?
A. Chữ người tử tù, Hai đứa trẻ
B. Số đỏ, Tinh thần thể dục
C. Số đỏ, Chí Phèo
D. Tinh thần thể dục, Chí Phèo Đáp án là: B. Số đỏ, Tinh thần thể dục </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Acha Xoa đã mượn vùng đất nào của Việt Nam để làm bàn đạp tấn công quân Pháp ở Campuchia?
A. Châu Đốc, Tịnh Biên
B. Châu Đốc, Hà Tiên
C. Châu Đốc, Thất Sơn
D. Châu Đốc, Tây Ninh Đáp án là: B. Châu Đốc, Hà Tiên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các tác phẩm nổi tiếng của Lê Quý Đôn là:
A. Đại Việt sử ký tiền biên, Đại Nam liệt truyện.
B. Đại Việt thông sử, Phủ biên tạp lục, Vân Đài loại ngữ.
C. Lịch triều hiến chương loại chí, Đại Việt sử kí tiền biên.
D. Nhất thô... | [
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<s> Chọn đáp án đúng với câu hỏi: Ở Mỹ Latinh, rừng rậm xích đạo và nhiệt đới ẩm tập trung chủ yếu ở vùng nào sau đây?
A. Đồng bằng A-ma-dôn.
B. Vùng núi An-đét.
C. Đồng bằng La Pla-ta.
D. Đồng bằng Pam-pa. Đáp án là: A. Đồng bằng A-ma-dôn. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận xét nào sau đây đúng khi nói về sử dụng mặt phẳng nghiêng?
A. Sử dụng mặt phẳng nghiêng để đưa 1 vật lên cao sẽ thiệt hại về lực
B. Sử dụng mặt phẳng nghiêng để đưa 1 vật lên cao sẽ thiệt hại về khối lượng
C. Sử dụ... | [
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<s> Chọn đáp án đúng với câu hỏi: They have extensive experience ______ running programs and organising events.
A. of
B. in
C. with
D. For Đáp án là: B. in </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các mối quan hệ sinh thái giữa các loài sau đây, có bao nhiêu mối quan hệ có ít nhất một loài có hại? I. Loài cá ép sống bám trên các loài cá lớn. II. Một số loài tảo nước ngọt nở hoa cùng sống trong một môi trường với ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 2,96 gam este đơn chức X phản ứng vừa hết với 20 ml dung dịch NaOH 2M thu được 2 chất Z và T. Đốt cháy m gam T thu được 0,44 gam CO 2 và 0,36 gam H 2 O. Chất X là
A. CH 3 COOCH 3.
B. HCOOC 2 H 5.
C. CH 3 COOC 2 H 5.
D. C 2 H 5 COOCH 3. Đáp án là: A. CH ... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi chiếu một chùm sáng song song lên một gương cầu lồi, ta thu được một chùm sáng phản xạ............
A. Song song
B. Hội tụ
C. Phân kì
D. Không truyền theo đường thẳng Đáp án là: C. Phân kì </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hợp chất X có các đặc điểm sau: (1) Là chất khí ở nhiệt độ thường, nhẹ hơn không khí (2) Được thu bằng phương pháp đẩy không khí (3) Bị hấp thụ bởi dung dịch HCl đặc tạo khói trắng X là chất nào trong các chất sau?
A. NH 3
B. N... | [
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<s> Chọn đáp án đúng với câu hỏi: Sự hình thành ba đai cao trước hết là do sự thay đổi theo độ cao của yếu tố nào dưới đây?
A. Khí hậu.
B. Sinh vật.
C. Đất đai.
D. Lượng mưa. Đáp án là: A. Khí hậu. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tại một vị trí trong môi trường truyền âm, khi cường độ âm tăng gấp 10 lần giá trụ cường độ âm ban đầu thì mức cường độ âm
A. giảm đi 10 B.
B. tăng thêm 10 B.
C. tăng thêm 10 dB.
D. giảm đi 10 dB Đáp án là: C. tăng thêm 10 dB. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the option A, B, C, or D to indicate the most suitable response to complete each of the following exchanges. Lan and Hoa are attending the party! - Lan: “Would you like a coffee?” - Hoa: “...”
A. Yes, you could
B. Y es, let's
C. Yes, please
D. Yes, I would Đáp án là: C. Yes, ple... | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 6 - 7 và kiến thức đã học, sắp xếp tên các đỉnh núi lần lượt tương ứng theo thứ tự của 4 vùng núi: Tây Bắc, Đông Bắc, Trường Sơn Bắc, Trường Sơn Nam là
A. Chư Yang Sin, Phăng xi păng, Tây... | [
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<s> Chọn đáp án đúng với câu hỏi: Qua đoạn trích “Rô-bin-xơn ngoài đảo hoang”, tác giả muốn thể hiện điều gì?
A. Ca ngợi cách ăn mặc lạ lùng của Rô – bin - xơn
B. Tái hiện cuộc sống thú vị của Rô – bin - xơn
C. Miêu tả sự hài hước của Rô - bin - xơn
D. Tái hiên cuộ... | [
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<s> Chọn đáp án đúng với câu hỏi: 0,575km =..... m. Số cần điền vào chỗ chấm là:
A. 5,75
B. 57,5
C. 575
D. 0,0575 Đáp án là: C. 575 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: It can be inferred from the passage that which of the following discoveries was made during the first era in the history of nutrition?
A. Certain foods were found to be harmful to good health.
B. Vitamins were synthesized from foods.
C. Effective techniques of weight loss were determin... | [
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<s> Chọn đáp án đúng với câu hỏi: biển đông cho phép nước ta khai thác tổng hợp kinh tế biển nhằm
A. Chuyển dịch cơ cấu kinh tế và thương mại
B. Đem lại nhiều nguồn thu ngoại tệ chính cho đất nước.
C. Củng cố các đảo ven bờ.
D. Đưa dân ra biển tham gia các hoạt đ... | [
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<s> Chọn đáp án đúng với câu hỏi: The council has spent an enormous amount of money on this project.
A. immense
B. trivial
C. minor
D. moderate Đáp án là: A. immense </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hình bên dưới mô tả hiện tượng nhiều riboxom cùng trượt trên một phân tử mARN khi tham gia dịch mã. Quan sát hình và cho biết có bao nhiêu nhận xét không đúng? (1) Mỗi phân tử mARN thường được dịch mã đồng thời bởi một số rib... | [
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<s> Chọn đáp án đúng với câu hỏi: Ben went __________ the competition and won the first prize.
A. on
B. in for
C. away
D. through Đáp án là: B. in for </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các đô thị Hà Nội, TP. Hồ Chí Minh có chức năng là
A. là các trung tâm kinh tế.
B. trung tâm chính trị - hành chính.
C. văn hóa - giáo dục.
D. tổng hợp. Đáp án là: D. tổng hợp </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các trung tâm công nghiệp rất lớn của Trung Quốc là
A. Bắc Kinh, Thượng Hải, Vũ Hán, Quảng Châu, Trùng Khánh.
B. Bắc Kinh, Thượng Hải, Vũ Hán, Cáp Nhĩ Tân, Thẩm Dương.
C. Bắc Kinh, Thượng Hải, Vũ Hán, Nam Kinh, Phúc Châu.
D. Bắc Kinh,... | [
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<s> Chọn đáp án đúng với câu hỏi: Cây tỏi tiết chất gây ức chế hoạt động của vi sinh vật ở xung quanh là ví dụ về quan hệ
A. cạnh tranh
B. hợp tác
C. ức chế - cảm nhiễm
D. hội sinh Đáp án là: C. ức chế - cảm nhiễm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong Tạm ước kí ngày 14 - 9 - 1946 ta nhân nhượng thêm cho Pháp:
A. Một số quyền lợi về kinh tế và văn hóa.
B. Chấp nhận cho Pháp đưa 15.000 quân ra Bắc.
C. Một số quyền lợi về chính trị và quân sự.
D. Một số quyền lợi về k... | [
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<s> Chọn đáp án đúng với câu hỏi: Chất kháng sinh được sản xuất phần lớn có nguồn gốc từ:
A. Thực vật
B. Động vật
C. Xạ khuẩn
D. Thực vật và động vật Đáp án là: C. Xạ khuẩn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận định nào dưới đây nói lên đặc điểm nổi bật nhất trong sáng tác của Hồ Xuân Hương?
A. Khai thác triệt để về đề tài tình yêu đôi lứa
B. Nỗi buồn đau về kiếp người bị bóc lột dưới chế độ phong kiến
C. Bất mãn sâu ... | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 9, cho biết phát biểu nào sau đây không đúng về sự thay đổi chế độ nhiệt ở nước ta?
A. Nhiệt độ trung bình giảm theo bắc nam.
B. Biên độ nhiệt độ giảm từ bắc vào nam.
C. Cần Thơ có nhiệt... | [
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<s> Chọn đáp án đúng với câu hỏi: Phương hướng chiến lược của ta trong Đông Xuân 1953-1954 là gì?
A. Mở những cuộc tiến công vào hướng quan trọng về chiến lược mà địch tương đối yếu.
B. Tấn công vào các đô thị lớn – trung tâm đầu não chính trị, kinh tế của P... | [
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<s> Chọn đáp án đúng với câu hỏi: Đến năm 1975, thực dân Bồ Đào Nha đã phải tuyên bố trao trả độc lập cho các nước nào ở châu Phi?
A. Ănggôla, Marốc.
B. Ănggôla và Môdămbích.
C. Ănggôla, Angiêri.
D. Tuynidi, Marốc, Xuđăng. Đáp án là: B. Ănggôla và Môdămbích. </s> | [
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1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Khối lập phương là khối đa diện đều loại
A. {4; 3}
B. {3; 4}
C. {3; 3}
D. {5; 3} Đáp án là: A. {4; 3} </s> | [
1,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: He laughed __________ when he was watching “Tom and Jerry” on TV.
A. happily
B. happy
C. happiness
D. unhappy Đáp án là: A. happily </s> | [
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3... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Prices have fluctuated wildly in recent months due to the pandemic.
A. spin out of control
B. run faster
C. disappeared
D. changed frequently Đáp án là: D. changed frequently </s> | [
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368,
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7786,
7378... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Độ phì của đất là khả năng cung cấp nước, nhiệt, khí và các chất dinh dưỡng cần thiết cho
A. thực vật.
B. sinh vật.
C. vi sinh vật.
D. động vật. Đáp án là: A. thực vật. </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cuối năm 1426, nghĩa quân Lam Sơn đã giành được thắng lợi tại
A. Tân Bình - Thuận Hóa.
B. Tốt Động - Chúc Động.
C. Chi Lăng - Xương Giang.
D. Ngọc Hồi - Đống Đa. Đáp án là: B. Tốt Động - Chúc Động. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một lực F → tác dụng vào đầu M của một thanh có trục quay cố định O (Hình III.8). Đoạn thẳng nào là tay đòn của lực?
A. OM.
B. MN.
C. OI.
D. ON. Đáp án là: C. OI. </s> | [
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1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong các phát biểu sau, có bao nhiêu phát biểu đúng? (a) Cho dung dịch KMnO 4 tác dụng với dung dịch HF (đặc) thu được khí F 2. (b) Dùng phương pháp sunfat điều chế được: HF, HCl, HBr, HI, (c) Amophot (hỗn hợp các muối NH 4 H 2 PO 4 và (NH 4 ) ... | [
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865,
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1605,
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30103,
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289,
347,
... | [
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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: Hội nghị nào đã quyết định đổi tên Đảng cộng sản Việt Nam thành Đảng cộng sản Đông Dương?
A. Hội nghị lần thứ nhất ban chấp hành Trung ương lâm thời Đảng Cộng sản Việt Nam (10 -1930)
B. Hội nghị lần thứ nhất ban chấp hành Trun... | [
1,
1,
29871,
678,
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29876,
29871,
30128,
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865,
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29875,
274,
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298,
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29875,
29901,
8335,
31214,
31500,
29875,
8736,
2918,
31214,
1055,
30712,
29877,
298... | [
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: ._______,she will buy her parents a new TV.
A. When she receives her salary
B. Once she received her salary
C. Until she received her salary
D. After she had received her salary Đáp án là: A. When she receives her salary </s> | [
1,
1,
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869,
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1649,
3383,
11360,
674,
15649,
902,
11825,
263,
716,
564... | [
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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: Một quần thể ցiao phối đang ở trạng thái cân bằng di truyền, xét một gen có 2 alen là A và a, trong đó số cá thể có kiểu gen đồng hợp tử trội chiếm tỉ lệ 16%. Tần số các alen A và a trong quần thể này lần lượt là:
A. 0,38 va... | [
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1,
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29871,
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865,
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3150... | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: What does the word ‘they’ in line 4 refer to?
A. The American
B. The Greek
C. The Mexican
D. The Vietnamese Đáp án là: C. The Mexican </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Số đồng phân hiđrocacbon thơm ứng với công thức C 8 H 10 là
A. 4
B. 2
C. 3
D. 5 Đáp án là: A. 4 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Lối chơi chữ nào được sử dụng trong câu: Có tài mà cậy chi tài. Chữ tài liền với chữ tai một vần.
A. Lối nói trại âm
B. Từ ngữ đồng âm
C. Dùng từ trái nghĩa
D. Dùng lối nói gần nghĩa Đáp án là: A. Lối nói trại âm </s> | [
1,
1,
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1,
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1,
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hệ số cao nhất của đa thức 11x^3 – 5x^5 + 9x^3 + 19x^2 – 8x^5 là
A. 19;
B. 20;
C. 5;
D. –13. Đáp án là: D. –13 </s> | [
1,
1,
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678,
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379,
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269,
30984,
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302,
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31145,
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274,
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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... |
<s> Chọn đáp án đúng với câu hỏi: Hình nào biểu diễn đúng điểm A của số hữu tỉ 1/4 trên trục số?
A.
B.
C.
D. Không có hình nào đúng. Đáp án là: B. </s> | [
1,
1,
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29886,
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29901,
379,
30097,
29876,
29882,
302,
30001,
29877,
4768,
31957,
29884,
652,... | [
1,
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1,
1,
1,
1,
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1,
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1,
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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: Trong chất khô của cây, nguyên tố Mo chiếm tỉ lệ 1 trên 16 triệu nguyên tử H, nếu thiếu Mo cây trồng sẽ xảy ra hiện tượng gì?
A. Phát triển bình thường
B. Phát triển nhanh lúc giai đoạn non, phát triển chậm lúc trưởng thành
C. Pha... | [
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... | [
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1,
1,
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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: Trong một hộp có 7 viên bi đỏ, 5 viên bi trắng và 6 viên bi xanh. Chọn ngẫu nhiên ra 4 viên bi. Có bao nhiêu cách để chọn được 2 viên bi xanh.
A. 315;
B. 525;
C. 150;
D. 990. Đáp án là: D. 990 </s> | [
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: to communicate (27) _____ each other.
A. ín
B. on
C. for
D. with Đáp án là: D. with </s> | [
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1,
1,
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1,
1,
1,
1,
1,
1,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Khi nói về mã di truyền, phát biểu nào sau đây đúng?
A. Ở sinh vật nhân thực, côđon 3’AUG5’ có chức năng khởi đầu dịch mã và mã hoá axit amin mêtiônin
B. Côđon 3’UAA5’ quy định tín hiệu kết thúc quá trình dịch mã
C. Tính thoái hoá của ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong hình vẽ sau hình nào chỉ đúng hướng của lực Lorenxơ tác dụng lên electron và hạt mang điện dương chuyển động trong từ trường đều:
A.
B.
C.
D. Đáp án là: B. </s> | [
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1,
1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong sự nghiệp văn học của mình, Phan Châu Trinh nổi tiếng nhất là thể loại văn học nào?
A. Thơ và diễn ca
B. Văn chính luận và thơ
C. Diễn ca và tự truyện
D. Tự truyện và thơ Đáp án là: B. Văn chính luận và thơ </s> | [
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đặt điện áp xoay chiều AB gồm: đoạn mạch AM chứa điện trở thuần R = 90 Ω và tụ điện C = 35,4 μF, đoạn mạch MB gồm hộp X chứa 2 trong 3 phần tử mắc nối tiếp (điện trở thuần R 0 ; cuộn cảm thuần có độ tự cảm L 0, tụ điện có đi... | [
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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: Học khôn là
A. Phối hợp những kinh nghiệm cũ để tìm cách giải quyết những tình huống gặp lại.
B. Biết phân tích các kinh nghiệm cũ để tìm cách giải quyết những tình huống mới.
C. Biết rút các kinh nghiệm cũ để tìm cách giải q... | [
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1,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Có thể dùng NaOH (ở thể rắn) để làm khô các chất khí
A. NH 3, SO 2, CO, Cl 2
B. N 2, Cl 2, O 2, CO 2, H 2
C. N 2, NO 2, CO 2, CH 4, H 2
D. N 2, NO 2, CO 2, CH 4, H 2 Đáp án là: D. N 2, NO 2, CO 2, CH 4, H 2 </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Văn bản “Cuộc chia tay của những con búp bê”, tác giả muốn nhắn gửi với mọi người điều gì?
A. Tổ ấm gia đình là quý giá, mọi người hãy cố gắng giữ gìn,bảo vệ.
B. Bố mẹ là người có trách nhiệm hàng đầu trong việc nuôi dạ... | [
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<s> Chọn đáp án đúng với câu hỏi: Các tế bào trứng bắt đầu phát triển trong cái gì?
A. Tinh hoàn.
B. Buồng trứng.
C. Nang trứng.
D. Thể vàng. Đáp án là: C. Nang trứng. </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Các ngành dịch vụ chiếm tỉ trọng
A. Cao trong cơ cấu GDP của tất cả các nước trên thế giới.
B. Cao nhất trong cơ cấu GDP của các nước phát triển.
C. Thấp nhất trong cơ cấu GDP của các nước đang phát triển
D. Cao nhất trong cơ cấu... | [
1,
1,
29871,
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30975,
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29871,
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1,
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1,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Các muối cacbonat nào sau đây bị phân hủy ở nhiệt độ cao?
A. MgCO 3, BaCO 3, CaCO 3.
B. Na 2 CO 3, CaCO 3, K 2 CO 3.
C. MgCO 3, LiCO 3, BaCO 3.
D. Na 2 CO 3, CaCO 3, MgCO 3. Đáp án là: A. MgCO 3, BaCO 3, CaCO 3. </s> | [
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865,
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31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
9243,
30103,
29883,
3887,
29877,
31500,
30103,
29875,
274,
562,
6718,... | [
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<s> Chọn đáp án đúng với câu hỏi: generally have a higher socio-economic (66) _____ and enjoy better health and employment prospects.
A. status
B. request
C. condition
D. state Đáp án là: A. status </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi điện phân NaCl nóng chảy (điện cực trơ), tại catot xảy ra?
A. sự khử ion Na +
B. sự khử ion Cl -
C. sự oxi hóa ion Cl -
D. sự oxi hóa ion Na + Đáp án là: A. sự khử ion Na + </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: entrance, diploma, exchange, appl
A. entrance
B. diploma
C. exchange
D. apply Đáp án là: C. exchange </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hai con lắc đơn dao động điều hòa tại cùng một nơi với chu kì dao động lần lượt là 1,8s và 1,5s. Tỉ số chiều dài của hai con lắc là
A. 1,44.
B. 1,2.
C. 1,3.
D. 1,69. Đáp án là: A. 1,44. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một loài thực vật có bộ nhiễm sắc thể 2n = 12. Người ta gây đột biến nhân tạo về số lượng nhiễm sắc thể, đã thu được 6 thể đột biến có số lượng nhiễm sắc thể trong một tế bào sinh dưỡng khi ở trạng thái bình thư... | [
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<s> Chọn đáp án đúng với câu hỏi: Năm 1995 Việt Nam gia nhập tổ chức nào?
A. WTO.
B. EU.
C. ASEAN.
D. NAFTA. Đáp án là: C. ASEAN. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Con người có thể nghe được âm có tần số
A. trên 2.10 4 Hz
B. từ 16 Hz đến 2.10 4 Hz
C. dưới 16 Hz
D. từ thấp đến cao Đáp án là: B. từ 16 Hz đến 2.10 4 Hz </s> | [
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<s> Chọn đáp án đúng với câu hỏi: By clarifying everyone’s expectations and roles, you'll help to (61) ________ greater trust and increased productivity among employees.
A. set up
B. establish
C. create
D. build Đáp án là: B. establish </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Những nhân tố nào dưới đây tạo nên nguồn biến dị di truyền cho tiến hóa? (1)Đột biến (2)Chọn lọc tự nhiên (3)Giao phối ngẫu nhiên (4)Các nhân tố ngẫu nhiên
A. (3) và (4)
B. (2) và (3)
C. (1) và (3)
D. (1) và (4) Đáp án là: C. (1) và (3) <... | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nào sau đây đúng?
A. Tốc độ lan truyền qua xi náp hóa học chậm hơn so với tốc độ lan truyền qua xinap điện
B. Tất cả các xináp đều chứa chất trung gian hóa học axêtincôlin
C. Truyền tin qua xináp hóa học có thể không cần chất trun... | [
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<s> Chọn đáp án đúng với câu hỏi: Cuối thế kỉ XIX, để ép Nhật Bản phải “mở cửa”, các nước tư bản phương Tây đã
A. đ àm phán ngoại giao
B. dùng á p lực quân sự
C. t ấn công xâm lược
D. phá hoại kinh tế Đáp án là: B. dùng á p lực quân sự </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở trạng thái cơ bản S (Z = 16) có bao nhiêu electron ở phân lớp ngoài cùng?
A. 1.
B. 2.
C. 3.
D. 4. Đáp án là: D. 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The newlywed _______ spent their honeymoon in Hawaii.
A. pair
B. two
C. double
D. couple Đáp án là: D. couple </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự kiện nào đánh dấu mối quan hệ Trung - Mĩ ấm lên trong thời kì chiến tranh lạnh nhưng lại có tác động tiêu cực đến cuộc kháng chiến chống Mĩ của Việt Nam?
A. Hội nghị thượng định Xô - Mĩ diễn ra ở Trung Quốc năm 1972
B. Thủ... | [
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29875,
29901,
2166,
207,
158,
31214,
413,
347,
31214,
31500,
29876,
1055,
30712,
... | [
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: C h ấ t nào s a u đ â y c ó cấ u t r ú c mạ c h pol i me ph â n n h á n h?
A. Ami l op ec t i n
B. P oli i s opr e n
C. P oli ( me t y l m e ta c r y l a t ).
D. P oli ( vi n y l c loru a ). Đáp án là: A. Ami l op ec t i n </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Theo truyền thống, hóa học được chia thành bao nhiêu chuyên ngành chính?
A. 2
B. 4
C. 3
D. 5 Đáp án là: D. 5 </s> | [
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D to indicate the sentence that is closest in meaning to each of the following questions. Visitors come to admire the relics that were excavated from the ancient tombs.
A. Visitors come to admire the relics excavating from the ancient tombs.
B. Visitors come... | [
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29901,
4485,
278,
5497,
319,
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350,
29892,
315,
29892,
470,
360,
304,... | [
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to each of the following exchanges. Jack: “What an attractive hair style you have got, Jenny!” Jenny: “_________”.
A. Don’t mention it
B. No, I don’t think so
C. I can’t agree with you more
D. Than... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Khi nói về dao động duy trì của một con lắc, phát biểu nào sau đây đúng?
A. Biên độ dao động giảm dần, tần số của dao động khôngđổi.
B. Biên độ dao động không đổi, tần số của dao động giảmdần.
C. Cả biên độ dao động và tần s... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nhúng một thanh nhôm nặng 25 gam vào 200 ml dung dịch C u S O 4 0,5M. Sau một thời gian, cân lại thanh nhôm thấy cân nặng 25,69 gam. Nồng độ mol của C u S O 4 và A l 2 S O 4 trong dung dịch sau phản ứng lần lượt là
A. 0,425M và 0,2M
B. 0,425M và 0,... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Read the two passages below and circle the best option (A, B, C, D). An industrial society, especially one as centralised and concentrated as that of Britain, is heavily dependent on certain essential services: for instance, electricity supply, water, rail and road transport, the harbo... | [
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29901,
7523,
278,
1023,
1209,
1179,
2400,
322,
8607,
278,
1900,
2984,
313,... | [
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<s> Chọn đáp án đúng với câu hỏi: Một số tự nhiên có 6 chữ số được viết bởi ba chữ số 0 và ba chữ số 9 nằm xen kẽ nhau. Đó là số nào?
A. 090 909.
B. 909 909.
C. 909 090.
D. 909 009. Đáp án là: C. 909 090. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 8, cho biết mỏ sắt không phải là:
A. Lục Yên
B. Trại Cau
C. Thạch Khê
D. Tùng Bá Đáp án là: A. Lục Yên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Your first week in the job will be spent ______ one of our more experienced employees.
A. shadowing
B. surrounding
C. stalking
D. confining Đáp án là: A. shadowing </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X gồm Fe, Zn, ZnO và FeO. Để hoà tan 12,46 gam hỗn hợp X cần 380 ml dung dịch HCl 1M thu được 2,464 lít khí H2 (đktc). Cho 12,46 gam hỗn hợp X tác dụng với dung dịch HNO3 dư thu được 1,568 lít NO (đktc) và dung dịch Y. Cô cạn dung dịch Y... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Beethoven ___________ a lot of songs
A. composes
B. composed
C. has composed
D. compose Đáp án là: B. composed </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về hoạt động của opêron Lac ở vi khuẩn E. coli, phát biểu nào sau đây sai?
A. Nếu xảy ra đột biến ở giữa gen cấu trúc z thì có thể làm cho prôtêin do gen này quy định bị thay đổi cấu trúc
B. Nếu xảy ra đột biến ở gen điều... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Người ta dùng hạt prôtôn có động năng 1,6 MeV bắn vào hạt nhân L 3 7 i đứng yên, sau phản ứng thu được hai hạt giống nhau có cùng động năng. Giả sử phản ứng không kèm theo bức xạ γ. Biết năng lượng tỏa ra của phản ứng là 17,4 MeV.... | [
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29875,
11062,
868,
307... | [
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,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Mike won five medals at the competition. His parents _____________ very proud of him.
A. could have been
B. can’t have
C. can’t be
D. must have been Đáp án là: D. must have been </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
12828,
2113,
5320,
1612,
1338,
472,
278,
13888,
29889,
3600,
11825,
... | [
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,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một thanh đồng chất khối lượng m có 1 đầu được gắn vào tường bằng bản lề, đầu kia được treo bằng dây nhẹ như hình và thanh cân bằng. Phản lực của bản lề tác dụng vào thanh có phương nào?
A. Vuông góc vói tường
B. Phương O... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
4546,
31214,
31500,
29873,
1135,
29882,
29871,
30128,
29877,
31500,
3... | [
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,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đơn vị của mômen lực là:
A. N/m.
B. N/m
C. N.m
D. N. Đáp án là: C. N.m </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
29871,
30250,
29877,
207,
158,
29876,
3516,
31214,
2723,
207,
140,
... | [
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,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
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