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<s> Chọn đáp án đúng với câu hỏi: All of the following are mentioned in the passage as areas that involved statevernments in the nineteenth century EXCEPT _________.
A. mining
B. banking
C. manufacturing
D. higher education Đáp án là: D. higher education </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hai tập hợp A = {x ∈ Z| (x^2 – 10x + 21)(x^3 – x) = 0}, B = {x ∈ Z| – 3 < 2x + 1 < 5}. Khi đó tập X = A \ B là:
A. X = ∅;
B. X = {3; 7};
C. X = {– 1; 0; 1};
D. X = {– 1; 0; 1; 3; 7}. Đáp án là: B. X = {3; 7}; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Xét tính đồng biến, nghịch biến của hàm số y = –0,5x. Khẳng định nào sau đây là sai:
A. Hàm số đồng biến trên khoảng (0; 10);
B. Hàm số nghịch biến trên khoảng (–1; 5);
C. Hàm số nghịch biến trên khoảng (–5; –2022);
D. Hàm số nghịch biến trên khoảng (100; 10000). Đáp án là: A. Hàm số đ... | [
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<s> Chọn đáp án đúng với câu hỏi: If more people travel by bicycle, there will be_________pollution.
A. many
B. less
C. more
D. much Đáp án là: B. less </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vận tốc của ô tô là 40 km/ h, của xe máy là 11,6 m/s, của tàu hỏa là 600 m/phút. Cách sắp xếp theo thứ tự vận tốc giảm dần nào sau đây là đúng.
A. Tàu hỏa – ô tô – xe máy.
B. Ô tô- tàu hỏa – xe máy.
C. Tàu hỏa – xe máy – ô tô.
D. Xe ma... | [
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<s> Chọn đáp án đúng với câu hỏi: Ở giai đoạn đảo cực
A. Cả trong và ngoài màng tích điện âm
B. Màng trong tích điện dương, màng ngoài tích điện
C. Cả trong và ngoài màng tích điện dương
D. Màng trong tích điện âm, màng ngoài tích điện dương Đáp án là: B. Màng trong tích ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho dòng điện xoay chiều có biểu thức i = 2,0.sin(100πt) A chạy qua một dây dẫn. Trong 5,0 ms kể từ thời điểm t = 0 số êlectron chuyển qua một tiết diện thẳng của dây dẫn là:
A. 3,96.1016.
B. 7,96.1016.
C. 1,59.1017.
D. 1,19.1017. Đáp án là: A.... | [
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<s> Chọn đáp án đúng với câu hỏi: Chu trình sinh địa hóa là chu trình trao đổi:
A. Các chất trong tự nhiên từ môi trường vào quần xã và ngược lại.
B. Các hợp chất hữu cơ cần thiết cho sự sống trong tự nhiên.
C. Vật chất giữa các quần thể sinh vật trong một q... | [
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<s> Chọn đáp án đúng với câu hỏi: Ở động vật biến nhiệt, nhiệt độ môi trường càng cao thì chu kì sống của chúng
A. không đổi
B. càng dài
C. càng ngắn
D. luôn thay đổi Đáp án là: C. càng ngắn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép tính 4 nhân với 5 là
A. 20.
B. 9.
C. 1.
D. 16. Đáp án là: A. 20. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hạt nhân P 82 210 o đứng yên, phân rã α thành hạt nhân chì. Động năng của hạt α bay ra bằng bao nhiêu phần trăm của năng lượng phân rã
A. 98,1%
B. 1,9%
C. 86,2%
D. 13,8% Đáp án là: A. 98,1% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phân tử khối trung bình của polietilen X là 420.000. Hệ số polime hoá của PE là
A. 12.000.
B. 13.000.
C. 17.000
D. 15.000. Đáp án là: D. 15 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Gọi f là tiêu cự vật kính của máy ảnh. Để chụp được ảnh của một vật trên phim, ta phải đặt vật cách vật kính một khoảng d sao cho:
A. d<f
B. d=f
C. f<d<2f
D. d>2f Đáp án là: D. d>2f </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là sai khi nói về biên độ của dao động tổng hợp của hai dao động điều hoà cùng phương cùng tần số?
A. Phụ thuộc vào tần số của hai dao động thành phần
B. Phụ thuộc vào độ lệch pha của hai dao động thành ph... | [
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140,
29884,
1055,
... | [
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<s> Chọn đáp án đúng với câu hỏi: Hãy chọn phát biểu sai: Độ lớn của lực tương tác giữa hai điện tích điểm trong không khí:
A. Tỉ lệ thuận với bình phương khoảng cách giữa hai điện tích.
B. Phụ thuộc vào độ lớn của hai điện tích và khoảng cách giữa chúng
C. Tỉ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho hàm số bậc hai f(x) = 2x^2 – 8x + 7. Phát biểu nào sau đây là đúng?
A. Hàm số đồng biến trên khoảng (– ∞; 2), nghịch biến trên khoảng (2; + ∞);
B. Hàm số đồng biến trên khoảng (– ∞; 4), nghịch biến trên khoảng (4; + ∞);
C. Hàm số đồng biến trên khoảng (4; + ∞), nghịch biến trên kho... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép tính 8 g × 6 là
A. 14 g
B. 24 g
C. 48 g
D. 48 Đáp án là: C. 48 g </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quy luật thống nhất và hoàn chỉnh của lớp vỏ địa lí là quy luật về mối quan hệ quy định lẫn nhau giữa
A. các địa quyển.
B. các bộ phận lãnh thổ trong lớp vỏ địa lí.
C. các thành phần trong lớp vỏ địa lí.
D. lớp vỏ địa lí và v... | [
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<s> Chọn đáp án đúng với câu hỏi: Với giá trị nào của x thì biểu thức: f(x) = log_6(2x - x^2) xác định?
A. 0 < x < 2.
B. x > 2
C. -1 < x < 1.
D. x < 3 Đáp án là: A. 0 < x < 2. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khoanh vào chữ trước câu trả lời đúng Viết phân số 2315/100 dưới dạng số thập phân
A. 231,5
B. 23,15
C. 2,315
D. 2315 Đáp án là: B. 23,15 </s> | [
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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 that differs from the other three in the position of primary stress in each of the following questions.
A. office
B. begin
C. destroy
D. complain Đáp án là: A. office </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nói giảm nói tránh là phép tu từ liên quan đến phương châm hội thoại nào?
A.Phương châm về lượng
B.Phương châm về chất
C.Phương châm quan hệ
D.Phương châm lịch sự Đáp án là: D.Phương châm lịch sự </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thể tích không khí (đktc) dùng để đốt cháy hoàn toàn 2,24 lít khí metan (đktc) là
A. 11,2lít
B. 22,4 lít
C. 3,36 lít
D. 4,48 lít Đáp án là: B. 22,4 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Công thức cấu tạo của metyl axetat là
A. CH 3 COOCH 3.
B. HCOOC 2 H 5.
C. HCOOCH 3
D. CH 3 COOC 2 H 5. Đáp án là: A. CH 3 COOCH 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hàm số nào sau đâu có đồ thị nhận trục tung làm trục đối xứng?
A. y=(sinx)/(x).
B. y = cotx.
C. y = tanx.
D. y = -sinx. Đáp án là: A. y=(sinx)/(x). </s> | [
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<s> Chọn đáp án đúng với câu hỏi: If there were no oxygen on earth, life as we know ______ exist.
A. wouldn’t
B. didn’t
C. doesn’t
D. won’t Đáp án là: A. wouldn’t </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch nào sau đây tác dụng với dung dịch Ba(HCO 3 ) 2, vừa thu được kết tủa, vừa có khí thoát ra?
A. NaOH.
B. HCl.
C. Ca(OH) 2.
D. H 2 SO 4. Đáp án là: D. H 2 SO 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Người La Mã cổ đại đã sáng tạo ra loại chữ viết nào sau đây?
A. Chữ Hán.
B. Chữ hình nêm.
C. Chữ Phạn.
D. Chữ La-tinh. Đáp án là: D. Chữ La-tinh </s> | [
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158,
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29875,
997,
3219,
3047... | [
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<s> Chọn đáp án đúng với câu hỏi: In order to make an informative decision about your future career, it is advisable to partake in career orientation programs for high school students in your town.
A. informative
B. advisable
C. partake
D. orientation Đáp án là: A. informative </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X chứa ba este đều no, mạch hở và không chứa nhóm chức khá c. Đốt cháy hoàn toàn 0,24 mol X với lượng oxi vừa đủ, thu được 60,72 gam CO 2 và 22,14 gam H 2 O. Mặt khác đun nóng 0,24 mol X với dung dịch KOH vừa đủ, thu được hỗn h... | [
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<s> Chọn đáp án đúng với câu hỏi: Hầu hết các bộ phận của cây nào dưới đây đều chứa độc tố và gây hại đến sức khoẻ con người?
A. Rau ngót
B. Cần tây
C. Trúc đào
D. Chùm ngây Đáp án là: C. Trúc đào </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nội dung chính của đoạn thơ sau: Con về thăm mẹ chiều đông Bếp chưa lên khói mẹ không có nhà Mình con thơ thẩn vào ra Trời đang yên vậy bỗng oà mưa rơi (Về thăm mẹ - Đinh Nam Khương)
A. Hoàn cảnh người con về thăm mẹ
B. Lòng biết o... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về hệ số công suất cos φ của đoạn mạch xoay chiều, phát biểu nào sau đây sai?
A. Với đoạn mạch chỉ có tụ điện hoặc chỉ có cuộn cảm thuần thì cos φ =0
B. Với đoạn mạch có điện trở thuần thì cos φ =1
C. Với đoạn mạch có R, L... | [
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<s> Chọn đáp án đúng với câu hỏi: Diana/ quite lovey/ with /short black hair/ big brown eyes.
A. Diana quite lovely with short black hair and big brown eyes.
B. Diana is quite lovely with short black hair and big brown eyes.
C. Diana quite lovely with a short black hair and big brown eyes.
D. Diana is quite lovely with... | [
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<s> Chọn đáp án đúng với câu hỏi: Sóng t r u y ền t r ong m ột m ôi tr ư ờ ng đàn h ồ i vớ i t ố c độ 3 60 m /s. B an đ ầ u t ần s ố sóng l à 180 H z. Đ ể có b ư ớ c sóng l à 0, 5 m t hì c ần t ăng h ay g i ả m tầ n s ố s ó ng m ột lượ ng như nào?
A. T ăng t h êm 420... | [
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<s> Chọn đáp án đúng với câu hỏi: Số liên kết xichma có trong một phân tử C n H 2n+2 là:
A. 3n+2
B. 3n
C. 3n+1
D. 2n+2 Đáp án là: C. 3n+1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: In the passage above, which topic is considered unsuitable to discuss?
A. one's income
B. one's age
C. one's marital status
D. one's personality Đáp án là: A. one's income </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lấy 2 lít khí H 2 cho tác dụng với 3 lít khí Cl 2. Hiệu suất phản ứng là 90%. Thể tích hỗn hợp sau phản ứng là, (các thể tích đo trong cùng điều kiện nhiệt độ và áp suất):
A. 4,5 lít
B. 4 lít
C. 5 lít
D. Kết quả khác Đáp án là: C. 5 ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho số phức z thỏa mãn (z)≤1. Đặt A=(2z−i)/(2+iz). Mệnh đề nào sau đây đúng?
A. (A)≤1.
B. (A)≥1.
C. (A)<1.
D. (A)>1. Đáp án là: A. (A)≤1. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Volunteer work helps young people know their strong and weak points before they enter the ____.
A. job market
B. job world
C. position market
D. professional market Đáp án là: A. job market </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một cửa hàng ngày thứ nhất bán được 50 kg gạo, ngày thứ hai bán được ít hơn ngày thứ nhất 45 kg gạo. Hỏi số gạo ngày thứ nhất cửa hàng bán được gấp mấy lần ngày thứ hai?
A. 5 lần
B. 20 lần
C. 10 lần
D. 9 lần Đáp án là: C. 10 lần </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nghiệm lớn nhất của phương trình 5 - |2x| = -3x là:
A. -5
B. -1
C. 0
D. 5 Đáp án là: B. -1 </s> | [
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190,
146,
29875,
29901,
29170,
2918,
30529,
29885,
301,
31280,
29876,
302,
29882,
31145,
2987... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: No sooner.............................to marry Jack.............................to have serious doubts.
A. had Carol agreed / than she began
B. Carol has agreed / than she began
C. had Carol agreed / than she begins
D. had Carol agreed / than she had begun Đáp án là: A. had Carol agree... | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một cơ thể mèo có kiểu gen A a B d E G b D e g. Biết không xảy ra đột biến. Theo lý thuyết, có bao nhiêu phát biểu sau đây đúng? I. Cơ thể này có tối đa 64 loại giao tử II. Nếu chỉ có 1 tế bào giảm phân thì tối đa cho 4 loại giao tử I... | [
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59... | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: (Sở GD – ĐT Bắc Ninh – lần 2 2019) : Cho biết các côđon mã hóa các axit amin tương ứng như sau: GGG – Gly; XXX – Pro; GXU – Ala; XGA – Arg; UXG – Ser; AGX – Ser. Một đoạn mạch gốc của một gen ở vi khuẩn có trình tự các nuclêôtit là 5’AGXXGAXXXGGG3... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Tác động toàn diện của Biển Đông lên khí hậu nước ta là:
A. Mang lại cho nước ta lượng mưa và độ ẩm lớn.
B. Làm cho khí hậu nước ta mang đặc tính khí hậu hải dương nên điều hòa hơn.
C. Làm giảm tính chất khắc nghiệt của th... | [
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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 word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. In this writing test, candidates will not be penalized for minor mechanical mistakes.
A. punished
B. rewarded
C. motivated
D. dis... | [
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373,... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Diện tích S của hình phẳng giới hạn bởi đồ thị của hàm số y = f_1(x), y = f_2(x) liên tục và hai đường thẳng x = a, x = b được tính theo công thức:
A. S=∫ab(f_1(x)-f_2(x))dx
B. S=(∫abf_1(x)-f_2(x)dx)
C. S=∫ab(f_1(x)-f_2(x))dx
D. S=∫abf_1(x)-∫abf_2(x)dx Đáp án là: A. S=∫ab(f_1(x)-f_2(x)... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho sơ đồ phản ứng: Na 2 SO 3 + HCl → NaCl + X + H 2 O. Hỏi X là chất nào trong số các chất cho sau đây:
A. SO 2
B. SO 3
C. CO 2
D. O 2 Đáp án là: A. SO 2 </s> | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho hỗn hợp gồm 6,72 gam Mg và 0,8 gam MgO tác dụng hết với lượng dư dung dịch HNO 3. Sau khi các phản ứng xảy ra hoàn toàn, thu được 0,896 lít một khí X (đktc) và dung dịch Y. Làm bay hơi dung dịch Y thu được 46 gam muối khan. Khí X là
A. NO... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Điểm giống nhau giữa lục lạp và ti thể trong tế bào là?
A. Đều chứa sắc tố quang hợp.
B. Đều chứa nhiều loại enzyme hô hấp.
C. Đều được bao bọc bởi lớp màng kép.
D. Đều chứa nhiều phân tử ATP. Đáp án là: C. Đều được bao bọc ... | [
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<s> Chọn đáp án đúng với câu hỏi: Mục tiêu đấu tranh của giai cấp tư sản dân tộc ở các nước Đông Nam Á sau Chiến tranh thế giới thứ nhất là
A. đòi thi hành những cải cách dân chủ.
B. đòi tự do kinh doanh, tự chủ về chính trị.
C. đấu tranh đòi những quyền lợi kin... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Bộ luật nào dưới đây được ban hành dưới triều Nguyễn?
A. Hoàng Việt luật lệ.
B. Quốc triều hình luật.
C. Hình luật.
D. Hình thư. Đáp án là: A. Hoàng Việt luật lệ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: From each number, pick out the word whose underlined part is pronounced differently from the others
A. f a ther
B. d a te
C. h a rd
D. l a st Đáp án là: B. d a te </s> | [
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278,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hiệu điện thế giữa hai điểm:
A. Đặc trưng cho khả năng sinh công của điện trường trong sự di chuyển của điện tích q từ điểm nọ đến điểm kia
B. Đặc trưng cho khả năng sinh công của điện trường của điện tích q đứng yên
C. Đặc tr... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Công thức phân tử của phenol là
A. C 6 H 14 O.
B. C 6 H 6 O 2.
C. C 6 H 12 O 6.
D. C 6 H 6 O. Đáp án là: D. C 6 H 6 O </s> | [
1,
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158,
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1374,
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... | [
1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cách bảo quản thực phẩm (thịt, cá,...) bằng cách nào sau đây được coi là an toàn?
A. Dùng fomon, nước đá.
B. Dùng nước đá và nước đá khô.
C. Dùng nước đá khô và fomon.
D. Dùng phân đạm, nước đá. Đáp án là: B. Dùng nước đá và nướ... | [
1,
1,
29871,
678,
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29871,
30128,
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305,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to complete the sentences with given words ASEAN/ aim/ accelerate/ the/ economic growth, social progress/ cultural development/ the region.
A. ASEAN aims to accelerate the economic growth, social progress with cultural development in the region.
B. ASEAN ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Giá trị của tích phân \(I = \int\limits_0^1 {{x^2}\sqrt {1 - {x^2}} dx} \) là
A. \(\frac{\pi }{2}.\)
B. \(\frac{\pi }{{16}}.\)
C. \(\frac{\pi }{4}.\)
D. \(\frac{\pi }{8}.\) Đáp án là: B. \(\frac{\pi }{{16}}.\) </s> | [
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1... |
<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. m o ment
B. m o nument
C. sl o gan
D. qu o tient Đáp án là: B. m o nument </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Câu thơ trên liên quan đến truyền thuyết nào? “ Hình vuông trong trắng ngoài xanh Có đậu, có hành có cả thịt heo”
A.Thánh Gióng
B. Con Rồng cháu Tiên
C. Bánh chưng, bánh giầy
D. Sơn Tinh, Thủy Tinh Đáp án là: C. Bánh chưng, bánh giầy </s> | [
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: (2) ______, they had to depend on their husbands financially.
A. Therefore
B. However
C. As a result
D. Although Đáp án là: C. As a result </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn p hát biểu đúng?
A. Al là nguyên tố s.
B. Nhôm có 3 electron ở phân lớp ngoài cùng.
C. Al có 3 electron ở lớp M.
D. Nhôm có 1 electron ở lớp ngoài cùng. Đáp án là: C. Al có 3 electron ở lớp M. </s> | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Ở phân lớp 4d, số electron tối đa là
A. 6
B. 10
C. 14
D. 18 Đáp án là: B. 10 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: What does the word “ they ” in paragraph 2 refer to?
A. terrifying creatures
B. humans
C. science fiction films
D. industrial robots Đáp án là: D. industrial robots </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một thấu kính phân kì có tiêu cự 25 cm. Khoảng cách giữa hai tiêu điểm F và F’ là:
A. 12,5 cm
B. 25 cm
C. 37,5 cm
D. 50 cm Đáp án là: D. 50 cm </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Theo thuyết tiến hóa hiện đại, tổ chức sống nào sau đây là đơn vị tiến hóa cơ sở?
A. Quần thể
B. Hệ sinh thái
C. Quần xã
D. Cá thể Đáp án là: A. Quần thể </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân trực tiếp của cuộc khởi nghĩa Yên Bái (9-2-1930)?
A. Thực dân Pháp tổ chức nhiều cuộc vây ráp.
B. Nhiều cơ sở của đảng bị phá vỡ.
C. Bị động trước tình thế thực dân Pháp khủng bố sau vụ giết chết Badanh (9-2-1929) ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Phương trình quãng đường của một chất điểm có dạng: s = 10t + 4t 2 (x:m; t:s). Lúc t = 2 s vận tốc của vật là
A. 28 m/s
B. 18 m/s
C. 16 m/s
D. 26 m/s Đáp án là: D. 26 m/s </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Vùng núi phía đông lục địa Ô-xtrây-li-a có đặc điểm địa hình như thế nào?
A. Gồm dãy Trường Sơn Ô-xtrây-li-a với dải đất hẹp ven biển.
B. Gồm các hoang mạc lớn: Hoang mạc Lớn. Vic-to-ri-a Lớn và Ghip-sơn.
C. Gồm bồn địa Ac-tê-dia L... | [
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29876,
29871,
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1715,
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30030,
865,
325,
31280,
29875,
274,
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29884,
298,
228,
190,
146,
29875,
29901,
478,
29884,
30712,
865,
4948,
30103,
29875,
1374,
29875,
30103,
29874... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chỉ ra kết luận đúng trong các kết luận sau:
A. Áp lực là lực ép có phương vuông góc với mặt bị ép.
B. Đơn vị của áp suất là N.
C. Áp suất là độ lớn của áp lực trên một diện tích bị ép.
D. Đơn vị của áp lực là đơn vị của... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Núi già thường có đỉnh là
A. phẳng.
B. nhọn.
C. cao.
D. tròn. Đáp án là: D. tròn </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một ống dây dài 50 (cm), diện tích tiết diện ngang của ống là 10 c m 2 gồm 1000 vòng dây. Hệ số tự cảm của ống dây là:
A. 0,251 (H).
B. 6,28.10 - 2 (H).
C. 2,51.10 - 2 (mH).
D. 2,51 (mH). Đáp án là: D. 2,51 (mH) </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Lực từ tác dụng lên một đoạn dây dẫn có dòng điện chạy qua có hướng hợp với hướng của dòng điện góc α
A. có độ lớn cực đại khi α = 0.
B. có độ lớn cực đại khi α = π /2.
C. có độ lớn không phụ thuộc góc α.
D. có độ lớn dư... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn một phương án đúng A, B, C hoặc D ứng với câu đáp lại phù hợp trong các tình huống giao tiếp sau. The classmates are planning to take a field trip. - The monitor:“Why don’t we visit Hue Citadel this weekend?” - Jean: “ ______. We can learn about Vietnamese... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Giả sử Trái Đất không tự quay quanh trục mà chỉ chuyển động xung quanh Mặt Trời thì
A. Trái đất vẫn có ngày đêm
B. Quanh năm là ngày
C. Quanh năm mặt đất nhận đựơc một lượng nhiệt rất lớn
D. Sự sống vẫn tồn tại và phát tri... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các thí nghiệm sau (a) Cho Ba vào dung dịch chứa phèn chua (b) Cho FeCl 2 vào dung dịch AgNO 3 (c) Cho Ca(OH) 2 vào Mg(HCO 3 ) 2 (d) Sục khí NH 3 vào dung dịch hỗn hợp CuCl 2 và AlCl 3 (e) Cho một miếng nhôm vào dung dịch NaOH dư rồi sục khí CO 2 va... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Diode bán dẫn có tác dụng
A. chỉnh lưu dòng điện
B. khuếch đại dòng điện
C. cho dòng điện đi theo hai chiều
D. cho dòng điện đi theo hai chiều Đáp án là: A. chỉnh lưu dòng điện </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 Alice comes from England, but now she is living in Da Nang city. She works....(6)... a nurse in hospital. She has a car and usually drives to work. She leaves home....(7)... work at eight and starts work at half....(8)....eig... | [
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<s> Chọn đáp án đúng với câu hỏi: Fara là điện dung của một tụ điện mà
A. giữa hai bản tụ có hiệu điện thế 1V thì nó tích được điện tích 1 C.
B. giữa hai bản tụ có một hiệu điện thế không đổi thì nó được tích điện 1 C.
C. giữa hai bản tụ có điện môi với ha... | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch NaOH không phản ứng với chất nào sau đây?
A. Zn OH 2.
B. Al OH 3.
C. Al.
D. KCl. Đáp án là: D. KCl </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đâu là sáng tác của Giuyn Véc-nơ?
A. Đường vào trung tâm vũ trụ
B. Chất làm gỉ
C. Hành trình vào tâm Trái Đất
D. Xưởng Sô-cô-la Đáp án là: C. Hành trình vào tâm Trái Đất </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhóm các vật liệu được chế tạo từ polime (điều chế bằng phản ứng trùng ngưng) là :
A. Cao su ; nilon -6,6 ; tơ nitron
B. Tơ axetat ; nilon-6,6
C. Nilon-6,6 ; tơ lapsan ; thuỷ tinh plexiglas
D. Nilon-6,6 ; tơ lapsan ; nilon-6 Đáp án là: D. Nilon-6,6 ; tơ ... | [
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29885,
5777,
30103,
29883,
2947,
31214,
31500,
2987... | [
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<s> Chọn đáp án đúng với câu hỏi: Điền số thích hợp vào ô trống:Kho thứ nhất có 4,5 tấn thóc. Số thóc của kho thứ nhất bằng 37,5% số thóc của kho thứ hai.Vậy hai kho có tất cả... ki-lô-gam thóc.
A. 12000
B. 4500
C. 16500
D. 15600 Đáp án là: C. 16500 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Giữa hai bản tụ phẳng cách nhau 2 cm có một hiệu điện thế 10 V. Cường độ điện trường đều trong lòng tụ là
A. 50 V/m
B. 0,5 kV/m
C. 10 V/m
D. 0,02 V/m Đáp án là: B. 0,5 kV/m </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chiếu một chùm ánh sáng hẹp gồm hai bức xạ đỏ và tím từ một môi trường trong suốt ra không khí dưới góc tới i = 30 0. Chiết suất của môi trường trong suốt đó đối với tia đỏ và tia tím lần lượt là 2 và 3. Góc hợp bởi tia đ... | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 100 ml hỗn hợp gổm đimetylamin và 2 hiđrocacbon là đổng đẳng kế tiếp thu được 140 ml CO 2 và 250 ml hơi nước (các khí đo ở cùng điểu kiện). Công thức phân tử của 2 hiđrocacbon?
A. C 2 H 4 và C 3 H 6
B. C 2 H 2 và C 3 H 4... | [
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<s> Chọn đáp án đúng với câu hỏi: Đường Fructozơ có nhiều trong mật ong, ngoài ra còn có trong các loại hoa quả và rau xanh như ổi, cam, xoài, rau diếp xoắn, cà chua... rất tốt cho sức khỏe. Công thức phân tử của fructozơ là
A. C 12 H 22 O 11
B. C 6 H 12 O 6
C. C 6 H 10 O 5
D. C... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word that has the underlined part pronounced differently from the others.
A. ex c ited
B. prin c e
C. on c e
D. es c ape Đáp án là: D. es c ape </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Giá trị của biểu thức: 47,2 x 5 + 107,1 : 2,5 là:
A. 137,24
B. 1372,4
C. 278,84
D. 27,884 Đáp án là: C. 278,84 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu tiếp tuyến của đồ thị hàm số y=x^3−3x cách đều hai điểm A(1;2), B(−3;−6)?
A. 4
B. 3
C. 2
D. 5 Đáp án là: B. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Polime X là chất rắn trong suốt, cho ánh sáng truyền qua tốt nên được dùng chế tạo thủy tinh hữu cơ plexiglas. Monome tạo thành X là
A. H 2 N-[CH 2 ] 5 -COOH
B. CH 2 =C(CH 3 )COOCH 3
C. CH 2 =CH-CN.
D. CH 2 =CH-Cl. Đáp án là: B. CH 2 =C(CH 3 )COOCH 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vấn đề hệ trọng trong chiến lược khai thác tổng hợp, phát triển kinh tế biển của nước ta không phải là:
A. tăng cường khai thác nguồn lợi thủy sản ven bờ.
B. sử dụng họp lí nguồn lợi thiên nhiên biển.
C. thực hiện những bie... | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 18,4 gam hỗn hợp gồm FeS 2 và Ag 2 S thu được một lượng khí SO 2 (đktc) phản ứng vừa đủ với 200 gam dung dịch Br 2 12% và chất rắn B. Cho B vào cốc đựng lượng dư dung dịch HCl. Số gam chất rắn không tan trong dung d... | [
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<s> Chọn đáp án đúng với câu hỏi: Nếu sắp xếp tia hồng ngoại, tia tử ngoại, tia Rơnghen và ánh sáng nhìn thấy theo thứ tự giảm dần của tần số thì ta có dãy sau
A. tia hồng ngoại, ánh sáng nhìn thấy, tia tử ngoại, tia Rơnghen.
B. tia tử ngoại, tia hồng ngoại, tia Rơng... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 20 gam hỗn hợp 3 amin đơn chức tác dụng vừa đủ với dung dịch HCl 1M, cô cạn dung dịch thu được 31,68 gam hỗn hợp muối. Thể tích của dung dịch HCl 1M đã dùng?
A. 100ml
B. 50ml
C. 200ml
D. 320ml Đáp án là: D. 320ml </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hòa tan hoàn toàn 11,2 gam CaO vào nước ta thu được dung dịch A. Nếu hòa tan hoàn toàn 28,1 gam hỗn hợp MgCO 3 và BaCO 3 (trong đó chứa a% MgCO 3 về khối lượng) bằng dung dịch HCl và cho tất cả khí thoát ra hấp thụ hết vào dung dịch A thì... | [
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,
8335,
30712,
29874,
10345,
5089,
29874,
30712,
29876,
304,
29874,
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: Which of the following is TRUE according to the passage?
A. Over a third of newly-listed birds are in danger of dying out.
B. The causes leading to the significant decline of giraffes are different from those happening to other species.
C. There is a decline of almost 40% in the number... | [
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,
8449,
310,
278,
1494,
338,
15676,
5034,
304,
278,
13382,
29973,
13,... | [
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: _______, we ask for a deposit of $200 beforehand.
A. Added
B. Addition
C. Additional
D. Additionally Đáp án là: D. Additionally </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,
903,
7652,
1649,
29892,
591,
2244,
363,
263,
19754,
277,
310,
395,
... | [
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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1,
1,
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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: Một viên bi nhỏ kim loại khối lượng 9.10 5 k g thể tích 10 m m 3 được đặt trong dầu có khối lượng riêng 800 k g / m 3. Chúng đặt trong điện trường đều E = 4, 1.10 5 V / m có hướng thẳng đứng từ trên xuống, thấy viên bi nằm lơ lử... | [
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,
6316,
31500,
29876,
4768,
302,
1251,
207,
... | [
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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