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<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 question. The last time I saw her was three years ago.
A. I have seen her for the last three years.
B. About three years ago, I used to meet her.
C. I haven’t seen her for three y... | [
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<s> Chọn đáp án đúng với câu hỏi: She used to ______ the basketball team before ______ English at the local school.
A. coach - educating
B. coach - teaching
C. train - teaching
D. train - educating Đáp án là: B. coach - teaching </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hàm số y=−x^3+3x^2−3x+2. Khẳng định nào sau đây là ĐÚNG?
A. Hàm số nghịch biến trên khoảng (−∞;1) và đồng biến trên khoảng (1;+∞).
B. Hàm số đồng biến trên khoảng (−∞;1) và nghịch biến trên khoảng (1;+∞).
C. Hàm số luôn đồng biến trên R.
D. Hàm số luôn nghịch biến trên R. Đáp án là... | [
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<s> Chọn đáp án đúng với câu hỏi: Ứng với công thức phân tử C 3 H 6 O 2 có bao nhiêu hợp chất mạch hở bền tác dụng với NaOH
A. 3.
B. 4.
C. 2.
D. 1. Đáp án là: A. 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hệ thống sông lớn nhất Bắc Mỹ là?
A. Sông Ma-ken-di.
B. Sông Ri-ô Gran-đê.
C. Sông Mit-xi-xi-pi.
D. Sông Nen-sơn. Đáp án là: C. Sông Mit-xi-xi-pi. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: She................in Hue for twenty years.
A. lives
B. has lived
C. will live
D. lived Đáp án là: B. has lived </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ địa nào được xem là hình ảnh thu nhỏ của nước Việt Nam mới trong cách mạng tháng Tám?
A. Cao Bằng
B. Bắc Sơn- Võ Nhai
C. Cao- Bắc- Lạng
D. Khu giải phóng Việt Bắc Đáp án là: D. Khu giải phóng Việt Bắc </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Industrial processes and the (63) _______ of garbage also contribute to air pollution.
A. planting
B. burning
C. using
D. making Đáp án là: B. burning </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “I didn’t take your money” he said to her.
A. He doubted whether she had taken his money.
B. He denied talking her money
C. He admitted taking her money
D. He warned her to take his money Đáp án là: B. He denied talking her money </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phân bón nào sau đây làm tăng độ chua của đất?
A. KCl
B. NH 4 NO 3
C. NaNO 3
D. K 2 CO 3 Đáp án là: B. NH 4 NO 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quy tắc moment lực:
A. chỉ dùng cho vật rắn có trục quay cố định.
B. chỉ dùng cho vật rắn không có trục quay cố định.
C. không dùng cho vật chuyển động quay.
D. dùng được cho vật rắn có trục cố định và không cố định. Đáp án là: D. du... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to answer these following questions The World Trade Organization came into being in 1995. One of the youngest of the international organizations, the WTO is the successor to the General Agreement on Tariffs and Trade (GATT) established in the wake of the ... | [
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<s> Chọn đáp án đúng với câu hỏi: Mệnh đề nào sau đây đúng?
A. \[\forall x \in \mathbb{R},\,{x^2} - x + 1 > 0\];
B. \[\exists {\rm{n}} \in \mathbb{N},\,{\rm{n}} < 0\];
C. \[\exists {\rm{n}} \in \mathbb{Q},{n^2} = 2\];
D. \[\forall x \in \mathbb{Z},\frac{1}{x} > 0\]. Đáp án là: A. \[\forall x \in \mathbb{R},\,{x^2} - x ... | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy Bạch Mã là ranh giới tự nhiên của
A. vùng núi Đông Bắc và Tây Bắc.
B. vùng núi Trường Sơn Bắc và Trường Sơn Nam.
C. vùng núi Tây Bắc và Trường Sơn Bắc.
D. vùng núi Đông Bắc và Trường Sơn Bắc. Đáp án là: B. vùng núi Trường... | [
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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. interview
B. microwave
C. museum
D. water... | [
1,
1,
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29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
14542,
852,
278,
5497,
319,
29892,
350,
29892,
315,
470,
360,
304,
... | [
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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: Trường ca Bài thơ Hắc Hải được sáng tác năm bao nhiêu
A. 1957
B. 1958
C. 1959
D. 1960 Đáp án là: B. 1958 </s> | [
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207,
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865,
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6000,
30712,
29... | [
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1,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: _________ our apartment building has had two robberies in the last month, I ’ m going to pt an extra lock on the door and install a telephone in my bedroom.
A. Since
B. For
C. because of
D. owing to Đáp án là: A. Since </s> | [
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750,
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583,... | [
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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: Cho một mạch điện kín gồm nguồn điện có suất điện động E = 12 (V), điện trở trong r = 2,5 (Ω), mạch ngoài gồm điện trở R 1 = 0,5 (Ω) mắc nối tiếp với một điện trở R. Để công suất tiêu thụ ở mạch ngoài lớn nhất thì điện trơ... | [
1,
1,
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2730,
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31500,
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611,
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305,
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30128,
347,... | [
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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: Vì sao cá sống được trong nước?
A. Vì trong nước có hòa tan khí nitơ.
B. Vì trong nước có hòa tan khí cacbon đioxit.
C. Vì trong nước có hòa tan khí hiđro.
D. Vì trong nước có hòa tan khí oxi. Đáp án là: D. Vì trong nước có hòa tan khí oxi ... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cuộn tự cảm có L = 2 mH khi có dòng điện cường độ 10A đi qua. Năng lượng từ trường tích luỹ trong cuộn tự cảm có giá trị :
A. 0,05 J.
B. 0,1 J.
C. 1 J.
D. 4 J. Đáp án là: B. 0,1 J. </s> | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trái Đất có khối lượng khoảng 60.10^20 tấn. Mỗi giây Mặt Trời tiêu thụ 6.10^6 tấn khí hydrogen (theo vnexpress.net). Hỏi Mặt Trời cần bao nhiêu giây để tiêu thụ một lượng khí hydrogen có khối lượng bằng khối lượng Trái Đất?
A. 10^12;
B. 10^3;
C. 10^4;
D. 10^5. Đáp án là: D. 10^5 </s> | [
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413,
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30... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hiện tượng đoản mạch xảy ra khi
A. mạch điện bị nối tắt giữa hai cực nguồn điện
B. mạch điện có dây dẫn ngắn
C. mạch điện không có cầu trì
D. mạch điện dùng acquy để thắp sáng. Đáp án là: A. mạch điện bị nối tắt giữa hai cực... | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chia 36 thành ba phần tỉ lệ thuận với 5 ; 6 ; 7. Khi đó phần bé nhất là số:
A. 10
B. 12
C. 14
D. 16 Đáp án là: A. 10 </s> | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong mạch dao động LC lí tưởng đang có dao động điện từ tự do. Thời gian ngắn nhất để năng lượng điện trường giảm từ giá trị cực đại xuống còn một nửa giá trị cực đại là 1, 5.10 - 4 s. Thời gian ngắn nhất để điện tích tr... | [
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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: Choose the best answer. I often practise ___________ in the gym four times a week.
A. boxing
B. fishing
C. driving
D. scuba diving Đáp án là: A. boxing </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hiến pháp năm 1889 đã xác lập thể chế chính trị nào ở Nhật Bản?
A. Quân chủ lập hiến.
B. Cộng hòa đại nghị.
C. Quân chủ chuyên chế.
D. Cộng hòa Tổng thống. Đáp án là: A. Quân chủ lập hiến. </s> | [
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hệ cơ quan nào đóng vai trò chủ đạo trong hoạt động điều hoà thân nhiệt
A. Hệ tuần hoàn
B. Hệ nội tiết
C. Hệ bài tiết
D. Hệ thần kinh Đáp án là: D. Hệ thần kinh </s> | [
1,
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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: Hỗn hợp X gồm Na, Al, Mg. Tiến hành 3 thí nghiệm sau: -Thí nghiệm 1: Hòa tan m gam X vào nước dư thu được V lít khí. -Thí nghiệm 2: Hòa tan 2m gam X vào dung dịch NaOH dư thu được 3,5V lít khí. -Thí nghiệm 3: Hòa tan 4m gam X vào dung dịch HC... | [
1,
1,
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678,
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298,
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29901,
8335,
31500,
30478,
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5089,
207,
158,
31214,
29886,
1060,
748,
... | [
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1,
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1,
1,
1,
1,
1,
1,
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1,
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1,
1,
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1,
1,
1,
1,
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<s> Chọn đáp án đúng với câu hỏi: Chọn đáp án đúngNhững tháng nào sau đây có 31 ngày?
A. Tháng 1, tháng 3, tháng 5, tháng 7, tháng 8, tháng 10, tháng 12
B. Tháng 2, tháng 6, tháng 9
C. Tháng 4, tháng 6, tháng 9, tháng 11
D. Tháng 2, tháng 4, tháng 11 Đáp án là: A. Tháng 1, tháng 3, tháng 5, tháng 7, tháng 8, tháng 10, ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 13,26 gam triolein tác dụng với lượng dư Br 2. Số mol Br 2 phản ứng tối đa là:
A. 0,030
B. 0,045
C. 0,015
D. 0,010 Đáp án là: B. 0,045 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một lò xo nhẹ có độ cứng 100 N/m, đầu trên được treo vào một điểm cố định, đầu dưới gắn vào vặt nhỏ A có khối lượng 250 g; vật A được nối với vật nhỏ B có khối lượng 250 g bằng một sợi dây mềm, mảnh, nhẹ, không dãn ... | [
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<s> Chọn đáp án đúng với câu hỏi: Người Việt cổ xăm mình để
A. xua đuổi tà ma.
B. tránh bị thủy quái làm hại.
C. dễ dàng săn bắt thú rừng.
D. hóa trang thành các vị thần. Đáp án là: B. tránh bị thủy quái làm hại. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số thập phân gồm: Ba mươi hai đơn vị, tám phần mười, năm phần trăm viết là:
A. 3285
B. 32,85
C. 3,285
D. 328,5 Đáp án là: B. 32,85 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một điện tích chuyển động tròn đều dưới tác dụng của lực Lo-ren-xơ khi vận tốc của điện tích và độ lớn cảm ứng từ cùng tăng 2 lần thì bán kính quỹ đạo của điện tích
A. tăng 4 lần.
B. không đổi.
C. tăng 2 lần.
D. giảm 2 lần... | [
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<s> Chọn đáp án đúng với câu hỏi: Tỉ lệ gia tăng tự nhiên của nước ta có xu hướng giảm và tương đối thấp nhưng dân số nước ta vẫn tăng thêm mỗi năm khoảng 1 triệu người, nguyên nhân là do
A. đời sống nhân dân được nâng cao, y tế phát triển.
B. d ân số đôn... | [
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<s> Chọn đáp án đúng với câu hỏi: Sandra Miller, a French teacher, tried to teach herself German by rolling on a ( 64 ) ________ course
A. rapid
B. quick
C. fast
D. crash Đáp án là: C. fast </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vua Sáclơ I bị xử tử là do
A. ý muốn của giai cấp tư sản và quý tộc mới
B. nguyện vọng của đông đảo quần chúng nhân dân
C. quyết định của những người đứng đầu Quốc hội
D. quy định của Hiến pháp Anh vì nhà vua phạm tội phản qu... | [
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<s> Chọn đáp án đúng với câu hỏi: Phân kali là loại phân bón hóa học cung cấp cho cây nguyên tố kali dưới dạng ion K +. Tác dụng nổi bật của phân kali là làm tăng tính chống chịu (chống bệnh, chống rét, chịu hạn,...) của cây trồng. Một loại phân kali có chứa 68,56% KN... | [
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<s> Chọn đáp án đúng với câu hỏi: Giới hạn trên của lớp vỏ địa lí là
A. toàn bộ khí quyển
B. giới hạn dưới của lớp ôdôn
C. giới hạn dưới của đỉnh tầng bình lưu
D. giới hạn dưới của đỉnh tầng đối lưu Đáp án là: B. giới hạn dưới của lớp ôdôn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các tính chất sau: (1) tan dễ dàng trong nước lạnh; (2) thủy phân trong dung dịch axit đun nóng; (3) tác dụng với Iot tạo xanh tím. Tinh bột có các tính chất sau:
A. (1), (3)
B. (2), (3)
C. (1), (2), (3)
D. (1), (2) Đáp án là: B. (2), (3) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hàm số nào trong các hàm số sau không liên tục trên khoảng (0; 3):
A. y = cot x;
B. y = sin x;
C. y = tan x;
D. y = cos x. Đáp án là: C. y = tan x; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khẳng định nào sau đây là sai:
A. Phép tịnh tiến bảo toàn khoảng cách giữa hai điểm bất kì
B. Phép quay bảo toàn khoảng cách giữa hai điểm bất kì
C. Nếu M’ là ảnh của M qua phép quay Q(O;∝_) thì (OM’;MM’) = ∝
D. Phép quay biến đường tròn thành đường tròn có cùng bán kính. Đáp án là: C.... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hai biểu thức \[B = \,\,\left( {\frac{2}{3} - 1\frac{1}{2}} \right):\frac{4}{3} + \frac{1}{2}\] và \[C = \,\frac{9}{{23}}.\frac{5}{8} + \frac{9}{{23}}.\frac{3}{8} - \frac{9}{{23}}\]. Chọn câu đúng
A. B < 0, C = 0
B. B >0, C = 0
C. B < 0, C < 0
D. B = 0, C < 0 Đáp án là: A. B < 0, C... | [
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<s> Chọn đáp án đúng với câu hỏi: Điều kiện để hàm số bậc ba không có cực trị là phương trình y’ = 0 có:
A. nghiệm kép.
B. vô nghiệm.
C. hai nghiệm phân biệt.
D. Cả A và B đúng. Đáp án là: D. Cả A và B đúng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cà phê và hồ tiêu ở Đông Nam Á không được trồng nhiều ở
A. Việt Nam.
B. Ma-lai-xi-a.
C. Mi-an-ma.
D. In-đô-nê-xi-a. Đáp án là: C. Mi-an-ma. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: According to the passage, the first refrigerated railcar used what material as a cooling agent?
A. ether
B. ice
C. ammonia
D. CFCs Đáp án là: B. ice </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các polime thuộc loại tơ nhân tạo là
A. tơ tằm và tơ vinilon.
B. tơ nilón-6, 6 và tơ capron.
C. tơ visco và tơ xenlulo axetat
D. tơ visco và tơ nilon-6,6 Đáp án là: C. tơ visco và tơ xenlulo axetat </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to complete the sentences Is there____________ rice left?
A. drinks
B. fruit
C. food
D. beverage Đáp án là: B. fruit </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho dãy các chất sau: glucozơ, saccarozơ, isoamyl axetat, toluen, phenyl fomat, fructozơ, glyxylvalin (Gly-Val), etylen glicol, triolein. Số chất bị thủy phân trong môi trường axit, đun nóng là
A. 5
B. 3
C. 4
D. 6 Đáp án là: A. 5 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đồ thị hàm số y=(ax+b)/(x^2+2x+2) có điểm cực trị là A(-3;-1). Tính giá trị của biểu thức a - b.
A. a−b=1
B. a−b=9
C. a−b=-3
D. a−b=-1 Đáp án là: C. a−b=-3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi đưa một vật từ mặt đất lên cao thì
A. khối lượng của vật tăng lên, còn trọng lượng c ủ a vật không đối.
B. khối lượng của vật không đổi, còn tr ọ ng lượng của vật giảm đi.
C. khối lượng và trọng lư ợ ng đều giảm.
D.... | [
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<s> Chọn đáp án đúng với câu hỏi: một trong những yếu tố quan trọng khiến khí hậu nước ta không khô hạn như các nước cùng vĩ độ như ở tây á, tây phi là
A. gió mùa
B. gió mậu dịch
C. gió đất, gió biển
D. gió Tây ôn đới Đáp án là: A. gió mùa </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở các loài chim, việc ấp trứng có tác dụng gì?
A. Bảo vệ trứng không bị kẻ thù tấn công lấy đi
B. Tăng mối quan hệ giữa bố mẹ và con
C. Tạo nhiệt độ thích hợp trong thời gian nhất định giúp hợp tử phát triển
D. Tăng tỉ lệ ... | [
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<s> Chọn đáp án đúng với câu hỏi: Tác phẩm Giọt nắng của Mai Văn Phấn thuộc thể loại nào?
A. Phê bình văn học
B. Tiểu luận
C. Thơ
D. Truyện ngắn Đáp án là: C. Thơ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: ______ air is one of the many problems we have to solve.
A. Pure
B. Polluted
C. Dust
D. Pleasant Đáp án là: B. Polluted </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
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: Nhận định nào sau đây đúng?
A. Rãnh thái dương ngăn cách thùy trán và thùy đỉnh.
B. Rãnh thái dương ngăn cách thùy đỉnh và thùy chẩm.
C. Rãnh thái dương ngăn 2 thùy đỉnh và trán với thùy thái dương.
D. Rãnh thái dương ngăn cách 2 thùy ... | [
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Năng lượng liên kết riêng là năng lượng liên kết
A. tính riêng cho hạt nhân ấy.
B. của một cặp prôtôn-prôtôn.
C. tính cho một nuclôn.
D. của một cặp prôtôn-nơtron. Đáp án là: C. tính cho một nuclôn. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Qua chuyến đi đến Đồng Tháp Mười, tác giả Văn Công Hùng đã được trải nghiệm và hiểu thêm những gì về nơi đây? Chọn đáp án không đúng:
A. Thiên nhiên, cảnh vật
B. Ẩm thực
C. Con người
D. Phong tục, nét văn hóa đặc sắc của ngươ... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Mai cao 123cm, Hoa cao 130cm. Hỏi Hoa cao hơn Mai bao nhiêu xăng-ti-mét?
A. 7 cm
B. 17 cm
C. 13 cm
D. 3 cm Đáp án là: A. 7 cm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The phrase "at the mercy of" mostly means ____.
A. completely dependent on
B. at request of
C. thankful to
D. under orders Đáp án là: A. completely dependent on </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là đúng khi nói về hướng của lực đẩy Ác-si-mét?
A. Hướng thẳng đứng lên trên.
B. Hướng thẳng đứng xuống dưới.
C. Theo mọi hướng.
D. Một hướng bất kì nào đó. Đáp án là: A. Hướng thẳng đứng lên trên. </... | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Ở cây hoa phấn, kiểu gen BB quy định hoa đỏ, Bb quy định hoa hồng, bb quy định hoa trắng. Cho các phép lai: (1) BB × BB (2) BB × Bb (3) BB × bb (4) Bb × Bb Có bao nhiêu phép lai cho kết quả 100% hoa đỏ?
A. 1
B. 2
C. 3
D. 4 Đáp án là: A. 1 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Tính chất nhiệt đới của khí hậu nước ta được biểu hiện ở
A. trong năm, Mặt Trời luôn ở vị trí cao trên đường chân trời.
B. tổng bức xạ lớn, cân bằng bức xạ dương quanh năm.
C. hằng năm, nước ta nhận được lượng nhiệ... | [
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<s> Chọn đáp án đúng với câu hỏi: My children are possibly in the living room.
A. My children will be playing in the living room.
B. My children cannot be in the kitchen.
C. I do not know whether my children are in the living room.
D. My children might be in the living room. Đáp án là: D. My children might be in the li... | [
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<s> Chọn đáp án đúng với câu hỏi: How often does he play basketball?
A. once a week
B. twice a week
C. three times a week
D. four times a week Đáp án là: C. three times a week </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mặt phẳng Oxy, cho điểm A(2;1) và véc tơ a→(1;3). Phép tịnh tiến theo vectơ a→ biến điểm A thành điểm A'. Tọa độ điểm A' là
A. (-1;-2)
B. (1;2)
C. (4;3)
D. (3;4) Đáp án là: A. (-1;-2) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho kim loại Fe lần lượt phản ứng với các dung dịch: FeCl 3, Cu(NO 3 ) 2, AgNO 3, MgCl 2. Số trường hợp xảy ra phản ứng hóa học là
A. 4
B. 3
C. 1
D. 2 Đáp án là: B. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Giá trị lớn nhất, giá trị nhỏ nhất của hàm số y=(cosx−2sinx)/(2−sinx) lần lượt là
A. (−2+√(19))/3 và (−2−√(19))/3.
B. √(3) và (√(3))/3.
C. √(3)và -3.
D. (−√(3)−√(19))/3 và (−√(3)+√(19))/3. Đáp án là: A. (−2+√(19))/3 và (−2−√(19))/3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Why is “plankton” mentioned in line 14?
A. To illustrate a comparison between organisms that live on the land and those that live in the ocean
B. To point out that certain species could never become extinct
C. To demonstrate the interdependence of different species
D. To emphasize the ... | [
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3750,
338,
1346,
572,
804,
880,
30024,
5276,
297,
1196,
29871,
2989... | [
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<s> Chọn đáp án đúng với câu hỏi: Sóng xô vào bờ không phải là do
A. gió.
B. dòng biển.
C. bão.
D. áp thấp. Đáp án là: B. dòng biển. </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat địa lí Việt Nam trang 23, cho biết các cảng biển của nước ta theo thứ tự từ Bắc vào Nam là
A. Vũng Áng, Cửa Lò, Chân Mây, Dung Quất, Cái Lân.
B. Cái Lân, Cửa Lò, Vũng Áng, Chân Mây, Dung Quất.
C. Cửa Lò, Cái Lân, V... | [
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<s> Chọn đáp án đúng với câu hỏi: Sông ngòi nước ta có chế độ nước theo mùa là do phụ thuộc vào
A. chế độ mưa mùa.
B. hoạt động của dải hội tụ nhiệt đới.
C. hoạt động của bão.
D. sự đa dạng của hệ thống sông. Đáp án là: A. chế độ mưa mùa. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “ flawed ” in line 14 is closest in meaning to ______________.
A. faulty
B. deceptive
C. logical
D. offensive Đáp án là: A. faulty </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặt điện áp u = U 2 cos 50 π t V vào đoạn mạch Ab như hình vẽ: điện trở R = 80 Ω, tụ điện có điện dung C thay đổi được và cuộn dây không thuần cảm. Điều chỉnh C = 1 4800 π thì điện áp hiệu cụng hai đầu MB có giá trị nhỏ nhất là 72 V.... | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Theo Tổ chức Y tế Thế giới, nồng độ tối đa cho phép của ion Cd2+ trong nước là 0,005 mg/l. Khi cho dung dịch H2S dư vào 500 ml một mẫu nước thấy có 0,288.10-3 gam kết tủa CdS. Phát biểu nào sau đây không đúng?
A. Mầu nước trên chưa bi... | [
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<s> Chọn đáp án đúng với câu hỏi: Hiệu điện thế giữa hai điểm M và N là U MN = 45 V. Công mà lực điện tác dụng lên một positron khi nó chuyển động từ điểm M đến điểm N là
A. -8.10 - 18 J.
B. +8.10 - 18 J.
C. -7,2.10 - 18 J.
D. +7,2.10 - 18 J. Đáp án là: D. +7,2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đai cận nhiệt đới gió mùa ở Miền Bắc bị hạ thấp hơn so với Miền Nam vì
A. địa hình miền Bắc cao hơn miền Nam.
B. miền Bắc mưa nhiều hơn miền Nam.
C. miền Bắc giáp biển nhiều hơn miền Nam
D. miền Bắc chịu tác động của gió ... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong phòng thí nghiệm, người ta điều chế và thu khí oxi như hình vẽ dưới đây vì oxi
A. nặng hơn không khí
B. nhẹ hơn không khí.
C. rất ít tan trong nước
D. nhẹ hơn nước Đáp án là: C. rất ít tan trong nước </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các câu sau, câu nào sai?
A. −3<0
B. 5>−5
C. −12>−11
D. 0<9 Đáp án là: C. −12>−11 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The twins look so much alike that almost no one can ___ them ___.
A. take/apart
B. tell/away
C. tell/apart
D. take/on Đáp án là: C. tell/apart </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nếu lấy năm 1950 = 100%, tốc độ tăng trưởng sản lượng điện của thế giới qua các năm lần lượt là
A. 143,0%; 186,1%; 291,2%; 331,0%; 376,9.
B. 201,1%; 636,9%; 726,5 %; 691,2%; 705,5.
C. 238,3%; 1223,6%; 1535,8%; 2199,4%; 2393,1%.
D. 183,1%; 407,4%; 460,3%;... | [
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<s> Chọn đáp án đúng với câu hỏi: Có 4 lọ đựng riệng biệt: nước cất, dung dịch H 2 SO 4, dung dịch NaOH, dung dịch NaCl. Bằng cách nào có thể nhận biết được mỗi chất trong các lọ?
A. Giấy quì tím
B. Giấy quì tím và đun cạn
C. Nhiệt phân và phenolphtalein
D. Dung dịch N... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên tắc làm mềm nước cứng là
A. thay thế các ion Mg 2+ và Ca 2+ trong nước cứng bằng các ion khác.
B. oxi hoá các ion Mg 2+ và Ca 2+ trong nước cứng.
C. khử các ion Mg 2+ và Ca 2+ trong nước cứng.
D. làm giảm nồng độ các ion Mg 2+ và... | [
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<s> Chọn đáp án đúng với câu hỏi: Statesmen define a family as "a group of individuals having a common dwelling and related by blood adoption or marriage, (66)_________ includes common-law relationships".
A. which
B. that
C. what
D. it Đáp án là: A. which </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The most suitable title for the passage could be _______.
A. Difference between stage acting and film acting.
B. The fine line between the actors and the audience.
C. Taking your acting from stage to screen.
D. Resemblance and differences between acting techniques. Đáp án là: A. Differ... | [
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1,
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<s> Chọn đáp án đúng với câu hỏi: Cho số phức z thỏa mãn (z)=12. Biết rằng tập hợp các điểm biểu diễn các số phức w=(8−6i)z+2i là một đường tròn. Tính bán kính r của đường tròn đó.
A. r = 120
B. r = 122
C. r = 12
D. r=24√(7) Đáp án là: A. r = 120 </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Applicants must hold a(n) - driving licence.
A. artificial
B. faithful
C. false
D. valid Đáp án là: D. valid </s> | [
1,
1,
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263,
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448,
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1,
1,
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<s> Chọn đáp án đúng với câu hỏi: Người ta cần đun nóng để khối nước đá có khối lượng m 1 = 5 k g ở - 10 0 C nóng chảy hoàn toàn ở 0 0 C. Lấy nhiệt dung riêng của nước là 4200J/kg. Nhiệt lượng cần thiết cần cung cấp cho quá trình này là:
A. 1700kJ
B. 90kJ
C. 1610kJ... | [
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1,
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29871,
30128,
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1715,
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865,
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405,
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5777,
31... | [
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<s> Chọn đáp án đúng với câu hỏi: The passage may be taken from ____.
A. an article for general readers
B. a scientific journal for environmentalists
C. a school student's notebook
D. a magazine for tourists visiting an area Đáp án là: A. an article for general readers </s> | [
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450,
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515,
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1649,
5396,
13,
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<s> Chọn đáp án đúng với câu hỏi: No sooner _________ my car than the alarm went off.
A. the thief touched
B. touched the thief
C. the thief had touched
D. had the thief touched Đáp án là: D. had the thief touched </s> | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the best answer. I study 7 _______ at school: Maths, English, Music, Art, Literature, History, Geography.
A. subjects
B. lessons
C. teachers
D. exercises Đáp án là: A. subjects </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong trường hợp một gen quy định một tính trạng, gen trội là trội hoàn toàn, các gen phân li độc lập, tổ hợp tự do. Phép lai AaBb x aabb cho đời con có sự phân li kiểu hình theo tỉ lệ
A. 1 : 1 : 1 : 1.
B. 1 : 1
C. 3 : 1
D. 9 : 3 : 3 : 1. Đáp... | [
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1,
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<s> Chọn đáp án đúng với câu hỏi: Read the following passage, then choose the correct answer to questions. Today, supermarkets are found in almost every large city in the world. But the first supermarket (26)_________ opened only fifty years ago. It was opened in New York by a man named Michael Cullen. A supermarket is... | [
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865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
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29875,
29901,
7523,
278,
1494,
13382,
29892,
769,
6755,
278,
1959,
1234,
304,
515... | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
A. record ed
B. miss ed
C. search ed
D. surf ed Đáp án là: A. record ed </s> | [
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470,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Hai điểm M và N nằm trên cùng một đường sức của một điện trường đều có cường độ E, hiệu điện thế giữa M và N là U M N, khoảng cách MN=d. Công thức nào sau đây là không đúng?
A. U M N = V M - V N
B. U M N = E d
C. A M N = q U M N
D. E = ... | [
1,
1,
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30... | [
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<s> Chọn đáp án đúng với câu hỏi: Văn bản nói về nội dung gì?
A.Cảnh Lục Vân Tiên đi thi
B.Cảnh Lục Vân Tiên đánh cướp cứu người
C.Cảnh Lục Vân Tiên đỗ trạng nguyên
D.Cảnh Lục Vân Tiên bị hại Đáp án là: B.Cảnh Lục Vân Tiên đánh cướp cứu người </s> | [
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nước chiếm tỉ lệ bao nhiêu trong sinh khối tươi của mô thực vật?
A. Khoảng 30 – 40%.
B. Khoảng 40 – 50%.
C. Khoảng 50 – 70%.
D. Khoảng 70 – 90%. Đáp án là: D. Khoảng 70 – 90% </s> | [
1,
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29901,
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29883,
521,
347,
31500,
30... | [
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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: Sự kiện nào chứng tỏ Mĩ chính thức tham gia Chiến tranh thế giới thứ nhất?
A. Kí Hiệp ước liên minh với Đức
B. Tuyên chiến với Nga
C. Tuyên chiến với Pháp
D. Tuyên chiến với Đức Đáp án là: D. Tuyên chiến với Đức </s> | [
1,
1,
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678,
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29871,
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29976,
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30030,
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325,
31280,
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274,
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298,
228,
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29875,
29901,
2166,
207,
158,
31214,
413,
347,
31214,
31500,
29876,
1055,
30712,
... | [
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
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1,
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Giai đoạn 1893 – 1908 là thời kì nghĩa quân Yên Thế làm gì?
A. Xây dựng phòng tuyến
B. Tìm cách giải hoàn với quân Pháp.
C. Vừa chiến đấu, vừa xây dựng cơ sở.
D. Tích lũy lương thực, xây dựng quân tinh nhuế. Đáp án là: C. Vừa chiế... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
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30030,
865,
325,
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29875,
274,
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29884,
298,
228,
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146,
29875,
29901,
402,
18754,
29871,
30128,
19807,
31214,
29876,
29871,
29896,
29947,
2... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn đáp án đúng
A. Oxi không có khả năng kết hợp với chất hemoglobin trong máu
B. Khí oxi là một đơn chất kim loại rất hoạt động
C. Oxi nặng hơn không khí
D. Oxi có 3 hóa trị Đáp án là: C. Oxi nặng hơn không khí </s> | [
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263,
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2... | [
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1,
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1,
1... |
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