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<s> Chọn đáp án đúng với câu hỏi: Every year between 200 and 300 people (4)_____ injured during the run (5)_______ most injuries are due to falls and are not serious.
A. are
B. were
C. have been
D. had been Đáp án là: A. are </s> | [
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<s> Chọn đáp án đúng với câu hỏi: You should be more respectable of other people’s points of view. Don’t embarrass someone even if they are wrong.
A. should be
B. respectable
C. points of view.
D. embarrass Đáp án là: B. respectable </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các trung tâm tài chính ngân hàng lớn nhất thế giới hiện nay là
A. Niu Y-oóc, Luân-đôn, Tô-ky-ô, Xin-ga-po.
B. Niu Y-oóc, Luân-đôn, Tô-ky-ô, Phran-phuốc.
C. Niu Y-oóc, Luân-đôn, Tô-ky-ô, Niu Đê-li.
D. Niu Y-oóc, Luân-đôn, Tô-ky-ô, Thượng Hải.... | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm năng lượng tỏa ra khi một hạt nhân urani U 234 phóng xạ tia α tạo thành đồng vị thori Th 230. Cho các năng lượng liên kết riêng của hạt α là 7,10 MeV; của U 234 là 7,63 MeV; của Th 230 là 7,70 MeV.
A. 15 MeV.
B. 13 MeV.
C. 12 MeV.
D. 14 MeV. Đáp án ... | [
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<s> Chọn đáp án đúng với câu hỏi: Thời cơ “ngàn năm có một” để nhân dân Việt Nam tổng khởi nghĩa giành chính quyền năm 1945 kết thúc khi
A. Quân Đồng minh vào Đông Dương giải giáp quân đội Nhật.
B. Thực dân Pháp bắt đầu nổ súng xâm lược trở lại Việt Nam.
C. N... | [
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<s> Chọn đáp án đúng với câu hỏi: Thể thơ 5 chữ, giọng điệu thiết tha, rạo rực, nhiều hình ảnh thiên nhiên giàu sức gợi cảm. Đó là bài thơ nào?
A. Viếng lăng Bác
B. Con cò
C. Mây và sóng
D. Sang thu Đáp án là: D. Sang thu </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm nào sau đây không đúng với nền nông nghiệp hàng hoá?
A. Người dân quan tâm nhiều hơn đến thị trường tiêu thụ sản phẩm.
B. Mục đích sản xuất là tạo ra nhiều lợi nhuận.
C. Đẩy mạnh thâm canh, chuyên môn hoá, sử dụng ngà... | [
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<s> Chọn đáp án đúng với câu hỏi: Vì sao cây lược lại có một ý nghĩa quý giá, thiêng liêng đối với ông Sáu?
A. Vì nó làm dịu đi nỗi ân hận và chứa đựng bao nhiêu tình cảm yêu mến, nhớ thương, mong đợi của người cha đối với đứa con trong xa cách.
B. Vì nó chứ... | [
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<s> Chọn đáp án đúng với câu hỏi: Câu ca dao “Ngó lên nuộc lạt mái nhà/ Bao nhiêu nuộc lạt nhớ ông bà bấy nhiêu” thuộc chủ đề nào?
A. Tình cảm gia đình
B. Tình yêu quê hương, đất nước
C. Than thân
D. Châm biếm Đáp án là: A. Tình cảm gia đình </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm một số, biết rằng nếu lấy số đó trừ đi 30 rồi cộng 6, được bao nhiêu đem chia cho 8 thì được kết quả là 2
A. 45
B. 40
C. 38
D. 35 Đáp án là: B. 40 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho đoạn mạch RLC nối tiếp có R thay đổi được. Đặt vào hai đầu mạch điện áp xoay chiều ổn định. Khi R lần lượt là 18 Ω, 20 Ω, 24 Ω, 28 Ω, 32 Ω, 36 Ω thì công suất tiêu thụ của đoạn mạch lần lượt là P 1,P 2,P 3,P 4,P 5,P 6. Biết P 1 = P 5... | [
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<s> Chọn đáp án đúng với câu hỏi: Tổ chức nào sau đây không phải là tiền thân của Liên minh châu Âu?
A. Cộng đồng Kinh tế châu Âu
B. Cộng đồng châu Âu về nguyên tử
C. Cộng đồng Than và thép châu Âu
D. Cộng đồng châu Âu về quân sự Đáp án là: D. Cộng đồng châu Â... | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 4,48 lít khí etilen ở đktc cần dùng V lít khí oxi ở đktc. Giá trị của V là
A. 11,20 lít
B. 12,56 lít
C. 13,44 lít
D. 14,65 lít Đáp án là: C. 13,44 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho đến nay, trong sản lượng thịt của chăn nuôi ở nước ta, sản lượng thịt các loại của đàn lợn chiếm
A. 1/2.
B. 2/3.
C. 3/4.
D. 4/5. Đáp án là: C. 3/4. </s> | [
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298,
228,
190,
146,
29875,
29901,
14542,
29871,
30128,
29872,
31500,
30103,
29876,
302,
388,
29892,
534... | [
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<s> Chọn đáp án đúng với câu hỏi: Kim loại có nhiệt độ nóng chảy cao nhất là
A. Hg
B. Ag.
C. W
D. Fe Đáp án là: C. W </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một gia đình nhốt đều số thỏ nuôi vào 5 chuồng.Nếu đếm số thỏ nuôi trong 2 chuồng thì được 10 con. Hỏi gia đình đó nuôi bao nhiêu con thỏ
A. 12 con thỏ
B. 15 con thỏ
C. 20 con thỏ
D. 25 con thỏ Đáp án là: D. 25 con thỏ </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Biện pháp nào sau đây làm kim loại bị ăn mòn nhanh?
A. Bôi dầu, mỡ lên bề mặt kim loại.
B. Sơn, mạ lên bề mặt kim loại.
C. Để đồ vật nơi khô ráo, thoáng mát.
D. Ngâm kim loại trong nước muối một thời gian. Đáp án là: D. Ngâm kim loại... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho 2,0 gam hỗn hợp X gồm metylamin, đimetylamin phản ứng vừa đủ với 0,05 mol HCl, thu được m gam muối. Giá trị của m là:
A. 4,725.
B. 2,550.
C. 3,425.
D. 3,825. Đáp án là: D. 3,825 </s> | [
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1,
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1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho công thức chung của các axit cacboxylic sau: (I) Axit đơn chức C x H y COOH. (II) Axit hai chức C x H y (COOH) 2. (III) Axit đa chức no C n H 2n+2 (COOH) x (IV) Axit đơn chức có một liên kết π ở gốc C n H 2n-1 COOH (n ≥ 2). (V) Axit đơn chức no C n H 2n+... | [
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158,
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521,
6... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Read the entire label before use and carefully follow the labelled _______ for use.
A. advice
B. guidance
C. counsels
D. directions Đáp án là: D. directions </s> | [
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7523,
278,
4152,
3858,
1434,
671,
322,
16112,
1101,
278,
3858,
839,... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong bệnh viện, khi cấp cứu bệnh nhân có tim ngừng đập, bác sĩ thường sử dụng kĩ thuật sốc tim. Kĩ thuật này dựa trên tác dụng nào của dòng điện
A. Tác dụng nhiệt
B. Tác dụng từ
C. Tác dụng hóa học
D. Tác dụng sinh lí Đáp án là... | [
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6316,
31214,
31500,
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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: Trong các công thức sau đây, công thức nào là của chất béo?
A. C 3 H 5 (OCOC 4 H 9 ) 3
B. C 3 H 5 (COOC 15 H 31 ) 3
C. C 3 H 5 (OOCC 17 H 33 ) 3
D. C 3 H 5 (COOC 17 H 33 ) 3 Đáp án là: C. C 3 H 5 (OOCC 17 H 33 ) 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Which of the following statements is TRUE, according to the passage?
A. InfoWars triumphed over several prestigious channels as the most trusted source.
B. The study by Simmons Research was carried out in America about 38 news sources.
C. The research provides information on the credib... | [
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5034,
304,
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1338... | [
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1,
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1,
1,
1,
1,
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: invest enormous (29)_______ of money in advertising their products.
A. numbers
B. totals
C. figures
D. sums Đáp án là: D. sums </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong không gian Oxyz, cho hai mặt phẳng: (P): 5x - 3y + 2z - 19 = 0, (Q): x - y + z - 3 = 0. Tìm phương trình đường thẳng ∆ là giao tuyến của hai mặt phẳng (P), (Q).
A. (x−1)/2=(y−3)/2=(z−2)/1;
B. (x+5)/1=(y+2)/3=(z)/2;
C. (x+2)/(−1)=(y+2)/(−3)=(z)/(−2);
D. (x−5)/1=(y−2)/3=(z)/2. Đáp ... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là sai khi nói về năng lượng dao động điện từ tự do trong mạch dao động LC?
A. Năng lượng điện trường và năng lượng từ trường biến thiên điều hòa với tần số bằng một nửa tần số của cường độ dò... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các chất: Al, Al 2 O 3, Al 2 (SO 4 ) 3, Zn(OH) 2, NaHS, K 2 SO 3, (NH 4 ) 2 CO 3. Số chất đều phản ứng được với dung dịch HCl và dung dịch NaOH là:
A. 7.
B. 6.
C. 5.
D. 4. Đáp án là: C. 5. </s> | [
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29... | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các hỗn hợp rắn dạng bột có tỉ lệ số mol trong ngoặc theo thứ tự chất như sau : (1) Na và Al 2 O 3 (2:1) (2) Cu và FeCl 3 (1:3) (3) Na, Ba và Al 2 O 3 (1:1:2) (4) Fe và FeCl 3 (2:1) (5) Al và K (1:2) (6) K và Sr (1:1) Có bao nhiêu hỗn hợp có th... | [
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5089,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Ngày 7 - 10 - 1917 diễn ra sự kiện lịch sử gì ở Nga?
A. Quân khởi nghĩa chiếm Cung điện Mùa Đông
B. Lê-nin có bản báo cáo quan trọng trước Trung ương Đảng Bônsêvích
C. Các đội Cận vệ đỏ nhanh chóng chiếm được những vị trí then cho... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nối hai cột sao cho phù hợp
A. 1 – c; 2 – b; 3 – a.
B. 1 – b; 2 – c; 3 – a.
C. 1 – a; 2 – c; 3 – b.
D. 1 – a; 2 – b; 3 – c. Đáp án là: C. 1 – a; 2 – c; 3 – b. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nào dưới đây không phải là nguyên tắc hoạt động của tổ chức Liên Hợp quốc?
A. Duy trì hòa bình an ninh thế giới.
B. Giải quyết các tranh chấp bằng biện pháp hòa bình.
C. Tôn trọng toàn vẹn lãnh thổ và độc lập chính trị của t... | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho dãy các chất sau: Al, NaHCO 3, (NH 4 ) 2 CO 3, NH 4 Cl, Al 2 O 3, Zn, K 2 CO 3, K 2 SO 4. Có bao nhiêu chất trong dãy vừa tác dụng được với dung dịch HCl, vừa tác dụng được với dung dịch NaOH?
A. 2.
B. 3.
C. 4.
D. 5. Đáp án là: D. 5 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The bus fairs________three times so far this year.
A. have been risen
B. have risen
C. was risen
D. rose Đáp án là: A. have been risen </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to complete the passage below Andrew is an Indian farmer. He gets ___________ (6) early in the morning. It is quite true to say that an Indian farmer sleeps with the lamb and rises with the lark. Then he goes with ___________ (7) buffalo to the field. The... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng?
A. He là nguyên tử nguyên tố có bán kính nhỏ nhất trong bảng tuần hoàn.
B. Độ âm điện ( c ) là đại lượng đặc trưng cho khả năng nhường electron liên kết của một nguyên tử trong phân tử.
C. Oxide cao... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một ô tô có khối lượng 2,5 tấn chuyển động với tốc độ 54km/h đi qua một chiếc cầu lồi có bán kính cong 1000m. Lấy g = 10m/s 2. Áp lực của ô tô nén lên cầu khi ô tô ở vị trí mà đướng nối tâm quỹ đạo với ô tô tạo với phư... | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 4 -5, cho biết tỉnh nào sau đây của nước ta không giáp biển?
A. Quảng Ninh
B. Hà Nam
C. Ninh Bình
D. Ninh Thuận Đáp án là: B. Hà Nam </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây không phải là nguyên liệu của công nghiệp sản xuất xi măng?
A. Đất sét
B. Đá vôi
C. Cát
D. Thạch cao Đáp án là: C. Cát </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch phenol (C 6 H 5 OH) không phản ứng được với chất nào sau đây?
A. NaOH.
B. NaCl.
C. Br 2.
D. Na. Đáp án là: B. NaCl. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thể tích của hình hộp chữ nhật có độ dài hai cạnh đáy là 200 cm và 400 cm, chiều cao là 300 cm là:
A. 2 400 m^3;
B. 240 000 dm^3;
C. 2 400 dm^3;
D. 24 m^3. Đáp án là: C. 2 400 dm^3; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho đoạn mạch RLC nối tiếp (cuộn dây thuần cảm) với C R 2 < 2 L. Đặt vào hai đầu đoạn mạch một điện áp xoay chiều u = U 0 cos ω t V với ω thay đổi được. Điều chỉnh ω để điện áp hiệu dụng ở hai đầu bản tụ đạt cực đại, khi đó điệ... | [
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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: Cho phản ứng NaOH + HCl → NaCl + H 2 O. Phản ứng hóa học nào sau đây có cùng phương trình ion thu gọn với phản ứng trên?
A. 2KOH + FeCl 2 → Fe(OH) 2 + 2KCl.
B. NaOH + NH 4 Cl → NaCl + NH 3 + H 2 O.
C. KOH + HNO 3 → KNO 3 + H 2 O.
D. NaOH + NaHCO 3 → Na 2 CO 3 + H ... | [
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<s> Chọn đáp án đúng với câu hỏi: Tên thay thế của hợp chất hữu cơ chứa vòng benzen có công thức phân tử thu gọn C 6 H 7 N là
A. Anilin
B. Benzylamin
C. Phenylamin
D. Benzenamin Đáp án là: D. Benzenamin </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Choose the word whose underlined part is pronounced differently from the other three in each of the following questions
A. imag ine
B. discipl ine
C. determ ine
D. Valent ine Đáp án là: D. Valent ine </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một nhóm các nguyên tử kết hợp lại tạo thành
A. Nguyên tử.
B. Phân tử.
C. Vật.
D. Chất. Đáp án là: B. Phân tử. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hỗn hợp gồm Cu 2 S và FeS 2 tác dụng hết với dung dịch chứa 0,52 mol HNO 3, thu được dung dịch X (không chứa NH 4 + ) và hỗn hợp khí gồm NO và 0,3 mol NO 2. Để tác dụng hết với các chất trong X cần dùng 260 ml dung dịch NaOH 1M, sau ph... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Mối quan hệ nào sau đây là mối quan hệ cộng sinh?
A. Làm tổ tập đoàn giữa nhạn và cò biển
B. Dây tơ hồng bám trên thân cây
C. Trùng roi sống trong ống tiêu hóa của mối
D. Cây phong lan sống bám trên cây gỗ Đáp án là: C. Trùng roi sô... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hàm số f(x) = x^4 – 5x^2 + 4. Gọi S là diện tích hình phẳng giới hạn bởi đồ thị hàm số y = f(x) và trục hoành. Khẳng định nào sau đây sai?
A.S = ∫−22(f(x))dx;
B. S = 2(∫01f(x)dx)+2(∫12f(x)dx);
C. S = 2∫02(f(x))dx;
D. S = 2(∫02f(x)dx). Đáp án là: D. S = 2(∫02f(x)dx) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tên thay thế của CH 3 -CH 2 -CH 2 -CHO là
A. propan-1-al.
B. propanal.
C. butan-1-al.
D. butanal. Đáp án là: D. butanal </s> | [
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<s> Chọn đáp án đúng với câu hỏi: We will have prepared everything _____.
A. after the meeting began
B. as soon as the meeting will begin
C. by the time the meeting begins
D. when the meeting would begin Đáp án là: C. by the time the meeting begins </s> | [
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<s> Chọn đáp án đúng với câu hỏi: What does this text list?
A. rules for being safe while walking
B. the names of all pedestrians hit by cars last year
C. the names of the people working at the National Highway Traffic Safety Administration
D. the top five causes of accidental death among children Đáp án là: A. rules f... | [
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<s> Chọn đáp án đúng với câu hỏi: Một trong những điểm khác biệt của công cuộc cải tổ ở Liên Xô (1985 – 1991) so với công cuộc cải cách – mở cửa ở Trung Quốc (từ 1978) là gì?
A. Tiến hành cải tổ khi đất nước lâm vào tình trạng khủng hoảng trầm trọng.
B. Duy tri... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nung hỗn hợp gồm 15,2 gam Cr 2 O 3 và m gam Al. Sau phản ứng hoàn toàn, được 23,3 gam hỗn h ợ p rắn X. Cho toàn bộ X phản ứng với axit HC1 dư thoát ra V lít H 2 (đktc). Giá trị của V là:
A. 4,48.
B. 11,2.
C. 7,84.
D. 10,08. Đáp án là: C. 7,84. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả phân tích đa thức thành nhân tử của x(x – 3) + 4(3 – x) là
A. (x – 4)(x – 3)
B. (4 – x)(x – 3)
C. (x – 4)(3 – x)
D. (4 + x)(x – 3) Đáp án là: A. (x – 4)(x – 3) </s> | [
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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 m... | [
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266,
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3010... | [
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<s> Chọn đáp án đúng với câu hỏi: The sun slid behind the purple mountains in the ______ distance.
A. far
B. remote
C. isolated
D. far-flung Đáp án là: A. far </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tứ diện ABCD có AB⊥CD, AB = CD = 6,.là điểm thuộc cạnh BC sao cho MC = xBC (0 < x < 1) Mặt phẳng (P) song song với AB và CD lần lượt cắt BC, AC, AD, BD tại M, N, P, Q. Diện tích lớn nhất của tứ giác MNPQ là:
A. 9
B. 6
C. 10
D. 12 Đáp án là: A. 9 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các tập hợp:
A = {x ∈ Z | –1 ≤ x ≤ 2}; B = {x ∈ Z | –4 ≤ x ≤ 4}.
Xác định C_BA. Câu nào sau đây đúng?
A. C_BA = {–3; –2; 3; 4};
B. C_BA = {–4; –3; –2; 3};
C. C_BA = {–4; –3; –2; 3; 4};
D. C_BA = {–4; –3; –2; –1; 3; 4}. Đáp án là: C. C_BA = {–4; –3; –2; 3; 4}; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đâu không phải là thế mạnh nổi bật về ngành công nghiệp của Trung du và miền núi Bắc Bộ?
A. Thủy điện.
B. Khai khoáng.
C. Nhiệt điện.
D. Hóa chất. Đáp án là: D. Hóa chất </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về sự điều tiết của mắt, phát biểu nào sau đây là đúng?
A.Do có sự điều tiết, nên mắt có thể nhìn rõ được tất cả các vật nằm trước mắt
B.Khi quan sát các vật dịch chuyển ra xa mắt thì thể thuỷ tinh của mắt cong d... | [
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<s> Chọn đáp án đúng với câu hỏi: David does not have _________ Peter does.
A. money more than
B. as many money as
C. more money as
D. as much money as Đáp án là: D. as much money as </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch H 2 SO 4 loãng phản ứng được với kim loại nào sau đây?
A. Ag
B. Cu
C. Fe
D. Au Đáp án là: C. Fe </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc đơn, quả nặng có khối lượng 40 g dao động nhỏ với chu kì 2s. Nếu gắn thêm một gia trọng có khối lượng 120 g thì con lắc sẽ dao động nhỏ với chu kì
A. 4s
B. 0,25s
C. 2 3 s
D. 2s Đáp án là: D. 2s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: WTO là tên viết tắt của tổ chức nào sau đây?
A. thế giới.
B. Liên minh châu Âu.
C. Hiệp ước tự do thương mại Bắc Mĩ.
D. Diễn đàn hợp tác kinh tế châu Á – Thái Bình Dương. Đáp án là: A. thế giới. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Người ta thu khí oxi bằng cách đẩy nước là nhờ dựa vào tính chất
A. khí oxi tan trong nước ;
B. khí oxi khó hóa lỏng ;
C. khí oxi ít tan trong nước ;
D. khí oxi nhẹ hơn nước. Đáp án là: C. khí oxi ít tan trong nước ; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tài nguyên nào sau đây không thuộc tài nguyên thiên nhiên?
A. Tài nguyên rừng
B. Tài nguyên đất
C. Tài nguyên sinh vật
D. Tài nguyên trí tuệ con người Đáp án là: D. Tài nguyên trí tuệ con người </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nhiệt độ tăng thêm 10° thì tốc độ phản ứng tăng lên gấp 3 lần. Đ ể tốc độ phản ứng tăng lên 8 1 lần ( đang thực hiện ở 30° C) thì cần tiến hành ở nhiệt độ nào?
A. 90° C
B. 70° C
C. 15° C
D. 180° C Đáp án là: B. 70° C </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn hệ thức đúng được suy ra từ hệ thức cos^2 α + sin^2 α = 1 với 0° ≤ α ≤ 180°?
A. \[{\cos ^2}\frac{\alpha }{2} + {\sin ^2}\frac{\alpha }{2} = \frac{1}{2}\];
B. \[{\cos ^2}\frac{\alpha }{3} + {\sin ^2}\frac{\alpha }{3} = \frac{1}{3}\];
C. \[{\cos ^2}\frac{\alpha }{4} + {\sin ^2}\frac... | [
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<s> Chọn đáp án đúng với câu hỏi: Liên kết trong phân tử KCl là liên kết nào?
A. Liên kết cộng hóa trị phân cực.
B. Liên kết kim loại.
C. Liên kết ion.
D. Liên kết cộng hóa trị không phân cực. Đáp án là: C. Liên kết ion. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chất nào dưới đây có khả năng tham gia phản ứng tráng gương?
A.CH 3 COOCH 3.
B.HCOOCH 3.
C.C 2 H 5 OH.
D.CH 3 COOH. Đáp án là: B.HCOOCH 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vùng giàu tài nguyên khoáng sản bậc nhất nước ta là
A. Trung du và mi ề n núi Bắc Bộ.
B. Đồng bằng sông Hồng
C. Bắc Trung Bộ
D. Tây Nguyên Đáp án là: A. Trung du và mi ề n núi Bắc Bộ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Fill in the blank a suitable word Hello, My name............. Lan.
A. am
B. is
C. are
D. do Đáp án là: B. is </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn từ có trọng âm chính khác với các từ còn lại:
A. festival
B. badminton
C. participant
D. organize Đáp án là: C. participant </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho đoạn thẳng AB dài 50 cm, đoạn thẳng MN dài 15 dm. Tính tỉ số độ dài của đoạn thẳng AB và đoạn thẳng MN.
A. 50/15
B. 15/50
C. 1/3
D. 3 Đáp án là: C. 1/3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Biểu hiện quan trọng nhất của sự xuất hiện chủ nghĩa đế quốc là
A. xuất hiện giai cấp tư sản và vô sản
B. sự ra đời của các tổ chức độc quyền
C. chiến tranh đế quốc nhằm phân chia thuộc địa
D. mâu thuẫn xã hội gay gắt Đá... | [
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<s> Chọn đáp án đúng với câu hỏi: Những nhận biết về môi trường xung quanh giúp động vật hoang dã nhanh chóng tìm được thức ăn và tránh thú săn mồi là kiểu học tập?
A. In vết
B. Quen nhờn
C. Học ngầm
D. Điều kiện hóa Đáp án là: C. Học ngầm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Điền các từ láy thích hợp vào chỗ trống Mưa xuống (...), giọt ngã, giọt bay, bụi nước tỏa trắng xóa. Trong nhà bỗng tối sầm, một mùi nồng (...), cái mùi xa lạ, man mác của những trận mưa mới đầu mùa. Mưa (...) trên sân gạch. Mu... | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả đúng số chữ số có nghĩa của phép tính sau: 250 − 23, 1.0, 3451 + 0, 1034 − 4, 56
A. 237,57159.
B. 237.
C. 237,5.
D. 237,57. Đáp án là: B. 237. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong giảm phân, sự tự nhân đôi của NST xảy ra ở
A. Kì trung gian của lần phân bào I
B. Kì giữa của lần phân bào I
C. Kì trung gian của lần phân bào II
D. Kì giữa của lần phân bào II Đáp án là: A. Kì trung gian của lần phân bào I </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word "they'’ in the last paragraph refers to ____.
A. nouns
B. people
C. speakers
D. Americans Đáp án là: A. nouns </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong không gian Oxyz, cho các điểm A(0;−2;−1),B(1;−1;2). Tìm điểm M trên đoạn thẳng AB sao cho MA = 2MB.
A. (1/2;(−3)/2;1/2)
B. (2;0;5)
C. (2/3;(−4)/3;1)
D. (-1;-3;-4). Đáp án là: C. (2/3;(−4)/3;1) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm x biết (3/4x-3/5)-1/2=0
A. x=2/15
B. x=22/15
C. Không tồn tại x
D. x=22/15;x=2/15 Đáp án là: D. x=22/15;x=2/15 </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: Some interesting (26)............. have been done in libraries.
A. survey
B. questionnaires
C. research
D. studies Đáp án là: D. studies </s> | [
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3834,
8031,
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29953,
467,
11296,
3045,
505,
1063,
2309,
2... | [
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong không gian với hệ tọa độ Oxyz, cho đường thẳng (d):(x+2)/1=(y−2)/(−1)=(z+3)/2 và điểm A(1;-2;3).Mặt phẳng qua A và vuông góc với đường thẳng (d) có phương trình là:
A. x−y+2z−9=0.
B.x−y+2z+9=0.
C.x−2y+3z−9=0.
D.x−2y+3z−14=0. Đáp án là: A. x−y+2z−9=0. </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đẳng thức nào sau đây đúng với x≤0?
A.√(4x^2)=2x
B.√(4x^2)=4x
C.√(4x^2)=−4x
D.√(4x^2)=−2x Đáp án là: D.√(4x^2)=−2x </s> | [
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1... |
<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. Why is it that many teenagers have the energy to play computer games until late at night but can't find the energy to get ... | [
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865,
325,
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274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
7523,
278,
1494,
13382,
322,
2791,
278,
5497,
319,
29892,
350,
2989... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Để phân biệt ba dung dịch : dung dịch etanol, dung dịch glixerol và dung dịch phenol, ta lần lượt dùng các hóa chất sau đây?
A. Na, dung dịch B r 2
B. NaOH, Na
C. dung dịch B r 2, C u ( O H ) 2
D. dung dịch B r 2, N a Đáp án là: C. dung dịch B r 2, C u ( O H ) ... | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một con lắc lò xo gồm vật nhỏ có khối lượng 500 g gắn vào một lò xo có độ cứng 50 N/m. Con lắc này chịu tác dụng của ngoại lực cưỡng bức tuần hoàn. Khi tần số góc của ngoại lực lần lượt là 5 rad/s và 8 rad/s thì biên độ c... | [
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4546,
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378,
425,
207,
137,
30103,
29883,
658,
3... | [
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Các nguồn tài nguyên khoáng sản như than, dầu, khí là nguyên liệu cho ngành công nghiệp nào sau đây?
A. Công nghiệp luyện kim đen.
B. Công nghiệp luyện kim màu.
C. Công nghiệp năng lượng, hóa chất.
D. Công nghiệp vật liệu xây dựng. Đá... | [
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865,
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274,
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298,
228,
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29875,
29901,
9243,
30103,
29883,
302,
2543,
29877,
31500,
30712,
29876,
11062,
307... | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hãy chọn câu đúng nhất.
A. Số chia hết cho 3 là số có tổng các chữ số chia hết cho 3
B. Số chia hết cho 9 thì số đó chia hết cho 3
C. Cả A, B đều sai
D. Cả A, B đều đúng Đáp án là: D. Cả A, B đều đúng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Biện pháp nào dưới đây tốt nhất để hạn chế tác hại do lũ quét đối với tài sản và tính mạng của nhân dân?
A. Bảo vệ tốt rừng đầu nguồn.
B. Xây dựng các hồ chứa nước.
C. Di dân ở những vùng thường xuyên xảy ra lũ quét.
D... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Find the word which has a different sound in the part underlined.
A. s i gn
B. l i ght
C. b i e
D. t i n Đáp án là: D. t i n </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nội dung chính của đoạn trích sau: “ Hồn Trương Ba: (ngồi ôm đầu một hồi lâu rồi đứng vụt dậy) Không! Không! Tôi không muốn sống như thế này mãi! (nhìn chân tay, thân thể) Tôi chán cái chỗ ở không phải của tôi này lắm rồi, ch... | [
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1,
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865,
325,
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29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
1939,
31214,
31500,
29875,
270,
686,
18558,
30103,
29876,
29882,
2723... | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: 21% của 2014 là:
A. 422,49
B. 422,94
C. 42,29
D. 42,92 Đáp án là: B. 422,94 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngày 1/1/1959 diễn ra sự kiện gì trong lịch sử Cu – ba?
A. Ba – ti – xta đảo chính, thiết lập chế độ độc tài quân sự ở Cu – ba.
B. Cuộc tấn công vào pháo đài Môn – ca – đa của 135 thanh niên yêu nước.
C. Chế độ độc tài Ba – ti – xta bi... | [
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: There is no alternative. The president must approve the bill if the Congress passes it
A. possible agreement
B. improvement
C. other choice
D. change Đáp án là: C. other choice </s> | [
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1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: As stated in paragraph 2, a large percentage of e-waste meant for recycling in the developed countries _________.
A. is enventually sent to developing nations
B. is later recycled in local factories
C. contains all valuable metals except gold
D. is buried deep in the soil at landfills ... | [
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,
1094,
8703,
297,
14880,
29871,
29906,
29892,
263,
2919,
19649,
310,
... | [
1,
1,
1,
1,
1,
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1,
1,
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1,
1,
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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: Dầu mỏ, nguồn tài nguyên quan trọng của Tây Nam Á tập trung chủ yếu ở khu vực nào dưới đây?
A. Ven biển Đen.
B. Ven Địa Trung Hải.
C. Ven biển Caxpi.
D. Ven vịnh Péc-xích. Đáp án là: D. Ven vịnh Péc-xích </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,
7266,
31500,
30712,
29884,
2730,
207,
140,
29892,
302,
2543,
29877,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đặc điểm nào sau đây không đúng với thị trường chung châu Âu?
A. Các nước EU có chung một chính sách thương mại buôn bán với ngoài khối.
B. Quyền tự do đi lại, cư trú, chọn nghề của mọi công dân được đảm bảo.
C. Công dân nước n... | [
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,
29874,
31214,
207,
137,
29883,
29871,
30128,
347,
31500... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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,
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1,
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1,
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: Cho dãy các kim loại: Fe, Zn, Al, Mg, Ag, Cu. Số lượng kim loại vừa phản ứng được với dung dịch NaHSO 4, vừa phản ứng được với dung dịch HNO 3 đặc, nguội là
A. 3
B. 4.
C. 2.
D. 5. Đáp án là: C. 2. </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,
14542,
1146,
30478,
29891,
5777,
30103,
29883,
413,
326,
658,
29874,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
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