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<s> Chọn đáp án đúng với câu hỏi: Who was the fundraiser for?
A. Children in an orphanage
B. Children in hospital
C. Volunteers
D. Children at Riverdale Community Center Đáp án là: B. Children in hospital </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thực hiện các phản ứng sau: (1) Fe + dung dịch HCl (2) Fe + Cl 2 (3) dung dịch FeCl 2 + Cl 2 (4) Fe 3 O 4 + dung dịch HCl (5) Fe(NO 3 ) 2 + HCl (6) dung dịch FeCl 2 + KI Các phản ứng có thể tạo thành FeCl 3 là
A. 1, 2, 3, 4
B. 2, 3, 4, 5
C. chỉ 2, 3
D. chỉ trừ... | [
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<s> Chọn đáp án đúng với câu hỏi: Phương trình đường tròn (C) đi qua 3 điểm A (0; 2), B (−2; 0) và C(2;0) là:
A. x^2+y^2=8
B. x^2+y^2+2x+4=0
C. x^2+y^2-2x-8=0
D. x^2+y^2-4=0 Đáp án là: D. x^2+y^2-4=0 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The government should _______ these plans to make life more sustainable for people in both urban and rural areas.
A. implement
B. decline
C. urbanise
D. result Đáp án là: A. implement </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu trả lời đúng Hai nguồn sóng kết hợp là hai nguồn phát ra hai sóng:
A. Có cùng tần số.
B. Đồng pha
C. Đơn sắc và có hiệu số pha ban đầu của chúng thay đổi chậm.
D. Có cùng tần số và hiệu số pha ban đầu của chúng không đ... | [
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<s> Chọn đáp án đúng với câu hỏi: In order to _______ your goals, you need to invest the maximum amount of time, effort and energy in your studies.
A. manage
B. achieve
C. catch
D. establish Đáp án là: B. achieve </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bạn Lan đi siêu thị mua hai loại trái cây là xoài và ổi. Số tiền mà Lan phải trả theo giá niêm yết khi mua 2kg xoài và 3kg ổi là 80 000 đồng. Tuy nhiên, khi Lan trả tiền thì giá của xoài được giảm 10%so với giá niêm yết. Do đó, Lan chỉ trả 75 000 đồng. Giá niêm yết của mỗi kg xoài và k... | [
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<s> Chọn đáp án đúng với câu hỏi: A trend that has emerged recently is the sharing of childcare (321) __________ between husband and wife
A. abilities
B. possibilities
C. techniques
D. esponsibilities Đáp án là: D. esponsibilities </s> | [
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<s> Chọn đáp án đúng với câu hỏi: We are looking for cheap, clean and _______ sources of energy. These types of energy won't cause pollution.
A. effectiveness
B. effect
C. effective
D. effectively Đáp án là: C. effective </s> | [
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<s> Chọn đáp án đúng với câu hỏi: She doesn’t have a car. She doesn’t go out in the evening.
A. If she had a car, she would go out in the evening.
B. If she had a car, she will go out in the evening.
C. If she has a car, she would go out in the evening.
D. If she had had a car, she would go out in the evening. Đáp án l... | [
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<s> Chọn đáp án đúng với câu hỏi: I _________ the homework by the time you come back.
A. have done
B. will have done
C. had done
D. will do Đáp án là: B. will have done </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “crucial” in bold can be replaced by ____________.
A. necessary
B. sensitive
C. appropriate
D. complex Đáp án là: A. necessary </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Governments have overhunting... laws to protect wildlife from overhunting.
A. passed
B. done
C. given
D. discussed Đáp án là: A. passed </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhân tố tự nhiên nào có thể chi phối sự phân bố, quy mô, cơ cấu và tổ chức các xí nghiệp công nghiệp ở nước ta?
A. Vị trí địa lí.
B. Khí hậu.
C. Khoáng sản.
D. Địa hình. Đáp án là: C. Khoáng sản. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: There ___any eggs in the packet when I ___to the kitchen.
A. was/come
B. were/ come
C. was/ came
D. were/ came Đáp án là: D. were/ came </s> | [
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30057,
29884,
298,
228,
190,
146,
29875,
29901,
1670,
903,
1649,
1384,
29808,
297,
278,
18203,
746,
306,
903,
1649,... | [
1,
1,
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1,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Người ta thu khĩ oxi bằng cách đẩy nước là nhờ dựa vào tính chất:
A. Khí oxi tan trong nước.
B. Khí oxi ít tan trong nước.
C. Khí oxi khó hóa lỏng.
D. Khí oxi nhẹ hơn nước. Đáp án là: B. Khí oxi ít tan trong nước. </s> | [
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: I ___________ do that if I were you. You'll get into trouble.
A. didn't
B. won't
C. wouldn't
D. will Đáp án là: C. wouldn't </s> | [
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<s> Chọn đáp án đúng với câu hỏi: 3,8 =.... %. Số thích hợp cần điền vào chỗ chấm là:
A. 38
B. 380
C. 3,8
D. 0,38 Đáp án là: B. 380 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: _______ near Hoan Kiem Lake, that restaurant is my favorite place.
A. Located
B. That restaurant located
C. Locating
D. Having located Đáp án là: A. Located </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm từ có phần gạch chân phát âm khác với các từ còn lại.
A. f a t
B. festiv a l
C. gr a nd
D. m a n Đáp án là: B. festiv a l </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chất rắn vô định hình và chất rắn kết tinh:
A. Khác nhau ở chổ chất rắn kết tinh có cấu tạo từ những kết cấu rắn có dạng hình học xác định, còn chất rắn vô định hình thì không.
B. Giống nhau ở điểm là cả hai lọai chất ra... | [
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<s> Chọn đáp án đúng với câu hỏi: Xét các loài sau: (1) Ngựa (2) Thỏ (3) Chuột (4) Trâu (5) Bò (6) Cừu (7) Dê Trong các loại trên, những loài nào có dạ dày 4 Ngăn?
A. (4), (5), (6) và (7)
B.(1), (3), (4) và (5)
C. (1), (4), (5) và (6)
D. (2), (4), (5) và (7) Đáp án là: A. (4), (5), (6) và (... | [
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298... | [
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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 5,6 gam bột Fe tác dụng với 500 ml dung dịch AgNO 3 0,5 M. Tính khối lượng muối thu được:
A. 21,1g
B. 10,55g
C. 42,2g
D. 18g Đáp án là: A. 21,1g </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số hiệu nguyên tử của nguyên tố có tổng số electron trên các phân lớp p bằng 11 là:
A. 13.
B. 15.
C. 19.
D. 17. Đáp án là: D. 17 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Este X có các đặc điểm sau: - Đốt cháy hoàn toàn X tạo thành C O 2 và H 2 O có số mol bằng nhau; - Thuỷ phân X trong môi trường axit được chất Y (tham gia phản ứng tráng gương) và chất Z (có số nguyên tử cacbon bằng một nửa số nguyê... | [
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31... | [
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Công thoát của kim loại A là 3,86 eV; của kim loại B là 4,34 eV. chiếu một bức xạ có tần số f = 1, 5.10 15 H z vào quả cầu kim loại làm bằng hợp kim AB đặt cô lập thì quả cầu tích điện đến điện thế cực đại là V m a x. Để quả cầu ... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đốt nóng sợi dây đồng kim loại đã cuộn thành lò xo trên ngọn lửa đèn cồn đến khi ngọn lửa không còn màu xanh, sau đó nhúng nhanh vào etanol đựng trong ống nghiệm. Màu đen của dây đồng từ từ chuyển sang đỏ. Phát biểu nào sau đây là... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Từ phương trình 6(sinx−cosx)+sinxcosx+6=0, nếu ta đặt t = sinx - cosx thì giá trị của t nhận được là:
A. t = 1 hoặc t = -12.
B. t = -1.
C. t =- 1 hoặc t = 13.
D. t = 1. Đáp án là: B. t = -1. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: My daughter asks for money every day. I am really annoyed by it.
A. I am really annoyed by my daughter asks for money every day.
B. My daughter is asking for money every day.
C. I am really annoyed by it, my daughter asks for money every day.
D. My daughter is always asking for money e... | [
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1,
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30975,
29876,
29871,
30128,
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29886,
29871,
1715,
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865,
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298,
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29901,
1619,
8750,
19514,
363,
6909,
1432,
2462,
29889,
306,
626,
2289,
12... | [
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<s> Chọn đáp án đúng với câu hỏi: Nguồn năng lượng sinh ra nội lực chủ yếu là gì?
A. năng lượng từ các vụ nổ thiên thể
B. năng lượng ở trong lòng Trái Đất
C. năng lượng do con người gây ra
D. năng lượng của bức xạ Mặt Trời Đáp án là: B. năng lượng ở trong ... | [
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<s> Chọn đáp án đúng với câu hỏi: Có hai con lắc, trong cùng một khoảng thời gian con lắc thứ nhất thực hiện được 10 dao động, con lắc thứ hai thực hiện được 15 dao động. Tần số dao động của con lắc nào lớn hơn và lớn hơn bao nhiêu lần?
A. Tần số dao động c... | [
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<s> Chọn đáp án đúng với câu hỏi: Chất không có khả năng tham gia phản ứng thủy phân là:
A. protein.
B. saccarozơ.
C. glucozơ.
D. tinh bột. Đáp án là: C. glucozơ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho sơ đồ: X + O 2 → m e n g i a m C H 3 C O O H + H 2 O. X là:
A. C 2 H 4.
B. CH 3 OH.
C. C 2 H 5 OH.
D. C 2 H 2. Đáp án là: C. C 2 H 5 OH. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: He bent toward the candle and.................. gently
A. blow
B. blew
C. blowing
D. blown Đáp án là: B. blew </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đại hội VII của Quốc tế cộng sản đã xác định kẻ thù trước mắt của nhân dân thế giới là lực lượng nào?
A. Chủ nghĩa phát xít
B. Chủ nghĩa đế quốc
C. Chủ nghĩa thực dân
D. Tư bản tài chính Đáp án là: A. Chủ nghĩa phát xít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mặt phẳng tọa độ Oxy, cho tam giác ABC có A(1; 1), B(4; 13), C(5; 0). Tọa độ trực tâm H của tam giác ABC là
A.(2; 2)
B. (1; 1)
C.( -2; -2)
D. (-1; -1) Đáp án là: B. (1; 1) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kiểu khí hậu gió mùa phân bố ở khu vực nào của châu Á?.A. Đông Á, Đông Nam Á, Tây Nam Á.
B. Đông Bắc Á, Tây Nam Á, Nam Á.
C. Đông Nam Á, Bắc Á, Đông Á.
D. Đông Nam Á, Đông Á, Nam Á. Đáp án là: D. Đông Nam Á, Đông Á, Nam Á </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhà văn Nguyên Hồng tên thật là gì?
A. Nguyễn Nguyên Hồng
B. Nguyễn Hồng.
C. Hồng Nguyên
D. Nguyên Hồng Đáp án là: A. Nguyễn Nguyên Hồng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vật nào dưới đây có khả năng lớn lên?
A. Con mèo
B. Cục sắt
C. Viên sỏi
D. Con đò Đáp án là: A. Con mèo </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sử dụng hiệu điện thế nào dưới đây khi làm thí nghiệm là an toàn đối với cơ thể người.
A. Nhỏ hơn hoặc bằng 40 V.
B. Nhỏ hơn hoặc bằng 50 V.
C. Nhỏ hơn hoặc bằng 60 V.
D. Nhỏ hơn hoặc bằng 70 V. Đáp án là: A. Nhỏ hơn hoặc bằng... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC có B^ = 120°, AB = 6, BC = 7. Tính AC.
A. √(127);
B. √(43)
C. 8
D. √(106) Đáp án là: A. √(127); </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Giá trị của a để các hàm số f(x)=(x+2akhi x<0x^2+x+1khi x≥0) liên tục tại x=0 bằng
A. 1/2
B. 1/4
C. 0
D. 1 Đáp án là: A. 1/2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 0,15 mol tristearin ((C 17 H 35 COO) 3 C 3 H 5 ) tác dụng hoàn toàn với dung dịch NaOH dư, đun nóng, thu được m gam glixerol. Giá trị của m là
A. 24,4 gam.
B. 9,2 gam.
C. 13,8 gam.
D. 27,6 gam. Đáp án là: C. 13,8 gam. </s> | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Dòng nào dưới đây không phải từ ngữ xưng hô trong hội thoại
A.Ông, bà, bố, mẹ, chú, bác, cô, dì, dượng, mợ
B.Chúng tôi, chúng ta, chúng em, chúng nó
C.Anh, chị, bạn, cậu, con người, chúng sinh
D.Thầy, con, em, cháu, tôi, ta, tín chủ, n... | [
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1938,
30712,
865,
1055,
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868,
207,
158,
29877,
207,
15... | [
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1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp E chứa 3 peptit đều mạch hở gồm peptit X ( C 4 H 8 O 3 N 2 ), peptit Y ( C 7 H x O y N z ) và peptit Z (C 11 H n O m N t ). Đun nóng 14,21 gam E với dung dịch KOH vừa đủ, thu được hỗn hợp T gồm 3 muối của glyxin, analin và valin. Đốt cháy to... | [
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8335,
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5089,
207,
158,
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382,
521,
... | [
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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: Chiếu lần lượt hai chùm bức xạ có bước sóng λ 1, λ 2 (λ 1 < λ 2 ) vào quả cầu cô lập trung hòa về điện thì nó có điện thế cực đại tương ứng V 1, V 2. Chiếu đồng thời hai chùm bức xạ trên vào quả cầu này thì điện thế cực đ... | [
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8092,
207,
... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn a mol X (là trieste của glixerol với các axit đơn chức, mạch hở), thu được b mol CO 2 và c mol H 2 O (biết b – c = 4a). Hiđro hóa m 1 gam X cần 6,72 lít H 2 (đktc), thu được 39 gam Y (este no). Đun nóng m 1 gam X với dung dịch chứa ... | [
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1,
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29891,
5089,
... | [
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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 dãy các chất: H 2 NCH 2 COOH, HCOONH 4, ( CH 3 NH 3 ) 2 CO 3, C 6 H 5 NH 2, C 2 H 5 NH 2, CH 3 COOH, H 2 NCH 2 CONHCH ( CH 3 ) COOH. Số chất trong dãy phản ứng được với dung dịch NaOH và HCl là
A. 2
B. 5
C. 3
D. 4 Đáp án là: D. 4 </s> | [
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2... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Well, the party must ________, whether we have caterers or not!
A. break out
B. go on
C. hold back
D. give off Đáp án là: B. go on </s> | [
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5674,
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278,
6263,
1818,
903,
7652,
1649,
3383,
3692,
591,
505... | [
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đường chia nước là:
A. đường phân chia các hệ thống sông
B. đường phân chia các nhánh sông
C. đường phân chia các dòng sông chính
D. đường phân chia lưu vực của các hệ thống sông Đáp án là: D. đường phân chia lưu vực của các hệ t... | [
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42... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Big cities like Los Angeles and Mexico City are often covered by smog, a fog that occurs (7) ________ air pollution.
A. because of
B. in spite of
C. instead of
D. due of Đáp án là: A. because of </s> | [
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7997,
14368,
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10722,
322,
12568,
4412,
526,
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10664,
... | [
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1,
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây có khả năng phản ứng đồng thời với dung dịch KOH và H 2 SO 4?
A. CuO.
B. Al 2 O 3.
C. NaCl.
D. KOH. Đáp án là: B. Al 2 O 3. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Crom có số oxi hóa +6 trong hợp chất nào sau đây?
A. Cr(OH) 2.
B. CrO 3.
C. Cr 2 (SO 4 ) 3.
D. NaCrO 2. Đáp án là: B. CrO 3. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Vật có khối lượng m chịu tác dụng của lần lượt của 2 lực F 1 và F 2 thì thu được gia tốc tương ứng là a 1 và a 2. Nếu vật trên chịu tác dụng của lực F 1 + F 2 thì sẽ thu được gia tốc bao nhiêu?
A. a 1 − a 2
B. a 1 + a 2
C. a 1. a 2 a ... | [
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một ô tô chạy từ địa điểm A đến địa điểm B với vận tốc 40 km/h. Sau đó ô tô quay trở về A với tốc độ 60 km/h. Giả sử ô tô luôn chuyển động thẳng đều. Tính vận tốc trung bình của ô tô trên cả đoạn đường đi và về.
A. 48 km... | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn câu sai
A. x^2 + 4x – y^2 + 4 = (x – y + 2)(x + y+ 2)
B. (2x^2 – y)^2 – 64y^2 = (2x^2 – 9y)(2x^2 + 7y)
C. -x^3 + 6x^2y – 12xy^2 + 8y^3 = (2y – x)^3
D. x^8 – y^8 = (x^4)^2 – (y^4)^2 = (x^4 + y^4)(x^2 + y^2)(x + y) Đáp án là: D. x^8 – y^8 = (x^4)^2 – (y^4)^2 = (x^4 + y^4)(x^2 + y^2)... | [
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1,
1,
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1,
1,
1,
1,
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1,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Loại cá nào dưới đây không thuộc lớp Cá sụn?
A. Cá nhám
B. Cá đuối.
C. Cá thu
D. Cá toàn đầu. Đáp án là: C. Cá thu </s> | [
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<s> Chọn đáp án đúng với câu hỏi: While the dog was chasing me, I rose to the _______ by running to the crowd.
A. challenge
B. problem
C. issue
D. difficulty Đáp án là: A. challenge </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “No, it wasn’t me who broke the antique vase.” - said the child.
A. The child denied having broken the antique vase
B. The child refused to have broken the antique vase
C. The child accepted to have broken the antique vase
D. The child objected to having broken the antique vase Đáp án ... | [
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<s> Chọn đáp án đúng với câu hỏi: Dẫn luồng khí CO dư qua ống sứ chứa hỗn hợp Al 2 O 3, CuO, MgO, Fe 2 O 3 đun nóng, sau khi phản ứng xảy ra hoàn toàn thu được chất rắn gồm
A. Al 2 O 3, Cu, Mg, Fe.
B. Al 2 O 3, Cu, MgO, Fe.
C. Al 2 O 3, Fe 2 O 3, Cu, MgO.
D. Al, Fe, Cu, Mg. Đáp án là: B.... | [
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<s> Chọn đáp án đúng với câu hỏi: Which of the following statements NOT true about Sydney?
A. Sydney is not famous for its beautiful harbour
B. Sydney is one of the most beautiful cities in the world
C. Sydney is the busiest port in the South Pacific.
D. Sydney is the most exciting city in Australia. Đáp án là: A. Sydn... | [
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<s> Chọn đáp án đúng với câu hỏi: Định luật I Niutơn cho biết:
A. dưới tác dụng của lực, các vật chuyển động như thế nào.
B. mối liên hệ giữa lực tác dụng và khối lượng của vật.
C. nguyên nhân của chuyển động
D. nguyên nhân của trạng thái cân bằng của các va... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Tác phẩm văn học được xuất bản năm 1925 do Nguyễn Ái Quốc viết nhằm tố cáo tội ác dã man của thực dân Pháp, thức tỉnh tinh thần đấu tranh của nhân dân Việt Nam?
A. Con rồng tre
B. Bản án chế độ thực dân Pháp
C. Vi hành
D. Nhữn... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong đoạn mạch điện xoay chiều gồm điện trở thuần, cuộn cảm thuần và tụ điện mắc nối tiếp thì
A. điện áp giữa hai đầu tụ điện ngược pha với điện áp giữa hai đầu đoạn mạch.
B. điện áp giữa hai đầu cuộn cảm cùng pha với ... | [
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<s> Chọn đáp án đúng với câu hỏi: Theo thuyết tương đối, một hạt có khối lượng nghỉ m 0 chuyển động với tốc độ v; tốc độ ánh sáng trong chân không là c thì năng lượng toàn phần của hạt là
A. m 0 c 2 1 − v 2 c 2 + m 0 c 2
B. m 0 c 2
C. m 0 c 2 1 − v 2 c 2
D. m 0 c 2 1 − v 2 ... | [
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<s> Chọn đáp án đúng với câu hỏi: She told me a story _______ I found hard to believe.
A. what
B. which
C. who
D. whom Đáp án là: B. which </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn một lượng etyl axetat thu được 0,54 gam H 2 O và V lít (đktc) khí CO 2. Giá trị của V là
A. 0,538.
B. 1,320.
C. 0,448.
D. 0,672. Đáp án là: D. 0,672 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hàm số y= f(x) có limx→+∞f(x)=1 và limx→−∞f(x)=−1. Khẳng định nào sau đây là khẳng định đúng?
A. Đồ thị hàm số đã cho có hai tiệm cận ngang là các đường thẳng x=1 và x=-1
B. Đồ thị hàm số đã cho không có tiệm cận ngang.
C. Đồ thị hàm số đã cho có đúng một tiệm cận ngang.
D. Đồ thị ... | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm tất cả các giá trị của tham số thực m sao cho hàm số y=(x^3)/3−x^2+(2m−m^2)x−1 có 2 điểm cực trị.
A. m≠1
B. m∈R
C. m = 1
D. m∈(−∞;1) Đáp án là: A. m≠1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mắt của một người có quang tâm cách võng mạc khoảng 1,62 cm. Tiêu cự thể thủy tinh thay đổi giữa hai giá trị f1 = 1,60 cm và f2 = 1,53 cm. Nếu ghép sát đồng trục vào mắt một thấu kính thì mắt nhìn thấy vật ở vô cực không điều ti... | [
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29873,
2723,
207,
140,
29874,
2730,
31214,
3... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 12g Mg vào dung dịch chứa hai muối FeC l 2 và CuC l 2 có cùng nồng độ 2M, thể tích dung dịch là 100ml. Sau đó lấy dung dịch sau phản ứng cho tác dụng với dung dịch KOH dư. Tính khối lượng kết tủa thu được.
A. 23,2g
B. 22,3 g
C. 24,6g
D. 19... | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy một este no, đơn chức, mạch hở thu được 1,8 gam H 2 O. Thể tích khí CO 2 thu được (đktc) là:
A. 2,24 lít
B. 4,48 lít
C. 3,36 lít
D. 1,12 lít Đáp án là: A. 2,24 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: My uncle took _____ photography when he retired from work.
A. after
B. over
C. up
D. on Đáp án là: C. up </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dưới thời kì Bắc thuộc, mâu thuẫn cơ bản nhất trong xã hội Việt Nam là mâu thuẫn nào?
A. Mâu thuẫn Nông dân và địa chủ.
B. Mâu thuẫn giữa nhân dân Âu Lạc với chính quyền đô hộ phương Bắc.
C. Mâu thuẫn giữa chính quyền đô ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một ôtô chuyển động trên đoạn đường MN. Trong một phần hai quãng đường đầu đi với v = 40 km/h. Trong một phần hai quãng đường còn lại đi trong một phần hai thời gian đầu với v = 75 km/h và trong một phần hai thời gian cuối đi với ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một cuộn dây dẫn có độ tự cảm 3,0H được nối với nguồn điện có suất điện động 6,0V và điện trở trong rất nhỏ không đáng kể. Sau khoảng thời gian bao lâu tính từ lúc nối cuộn dây dẫn với nguồn điện, cường độ dòng điệ... | [
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31... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong không khí, có ba điểm thẳng hàng theo đúng thứ tự O, M, A sao cho OM = OA/3. Khi tại O đặt điện tích điểm 9Q thì độ lớn cường độ điện trường tại A là 900 V/m. Khi tại O đặt điện tích điểm 7Q thì độ lớn cường độ điện trươ... | [
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<s> Chọn đáp án đúng với câu hỏi: It is estimated that at least a million meteors have hit the Earth’s surface, which is only 25 percentage of the planet.
A. at least
B. million
C. have hit
D. Percentage Đáp án là: C. have hit </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mai có 12 quả mận, Mai cho em 6 quả mận, Mai còn lại số quả mận là:
A. 9
B. 8
C. 7
D. 6 Đáp án là: D. 6 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự khác biệt dễ nhận thấy của dạng đột biến chuối nhà 3n từ chuối rừng 2n là
A. chuối nhà có hạt, chuối rừng không hạt
B. chuối rừng có hạt, chuối nhà không hạt
C. chuối nhà sinh sản hữu tính
D. chuối nhà không có hoa Đáp án ... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mặt phẳng tọa độ Oxy, cho đường tròn (C'):(x−3)^2+y^2=16 vàI(1;2) điểm. Biết đường tròn (C') là ảnh của đường tròn (C) qua phép vị tự tâm I, tỉ số k=-2. Điểm nào sau đây thuộc đường tròn (C)?
A. M(3;4)
B. N(−2;3)
C. P(2;0)
D. Q(3;2) Đáp án là: B. N(−2;3) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một tứ giác có ba hình vuông là hình gì?
A. Hình chữ nhật
B. Hình vuông
C. Hình bình hành
D. Hình thoi Đáp án là: A. Hình chữ nhật </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho bảng số liệu: DIỆN TÍCH GIEO TRỒNG VÀ SẢN LƯỢNG LÚA CẢ NĂM Ở ĐỒNG BẰNG SÔNG HỒNG VÀ ĐỒNG BẰNG SÔNG CỬU LONG QUA CÁC NĂM (Nguồn: Niên giám thống kê Việt Nam 2015, Nhà xuất bản Thống kê, 2016) Nhận xét nào sau đây không đúng... | [
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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: Đánh giá thế nào về kế hoạch Đờ-Lát đơ Tát-xi-nhi?
A. Là kế hoạch quân sự phản ánh sự nỗ lực cao nhất của Pháp và Mĩ nhằm kết thúc chiến tranh ở Đông Dương.
B. Là một kế hoạch quân sự đánh dấu sự lệ thuộc hoàn toàn củ... | [
1,
1,
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330,
423,
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278,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Choose a word in each line that has different stress pattern.
A. economical
B. cultivation
C. disappoint
D. administrator Đáp án là: D. administrator </s> | [
1,
1,
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14542,
852,
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1196,
393,
756,
1422,
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4766... | [
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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: Hòa tan hoàn toàn một lượng Ba vào dung dịch loãng chứa a mol HCl thu được dung dịch X và a mol H 2. Trong các chất sau: Na 2 SO 4, Na 2 CO 3, Al, Al 2 O 3, AlCl 3, Mg, Cr, Cr 2 O 3, Si, NaOH, NaHCO 3. Số chất tác dụng được với dung dịch X là
A. 5.
B. ... | [
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274,
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298,
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29901,
8335,
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10345,
5089,
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30712,
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304,
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307... | [
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1,
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1,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hình ảnh thiên nhiên nào dưới đây không được sử dụng để nói về vẻ đẹp Thúy Vân?
A.Mặt trăng
B.Hoa
C.Mây
D.Sao Đáp án là: D.Sao </s> | [
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1,
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263,
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266,
347,
3... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: When we were children, our parents.................us to tidy up our room.
A. were always told
B. told always
C. forever told
D. were forever telling Đáp án là: D. were forever telling </s> | [
1,
1,
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1932,
591,
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4344,
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11825,
11296,
3045,
18598,
375,
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: People___ are expected to be formally dressed for the occasion.
A. are invited
B. invited
C. to be invite
D. inviting Đáp án là: B. invited </s> | [
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363,
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10039,
2... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chủ nghĩa thực dân cũ ở châu Phi cùng hệ thống thuộc địa của nó cơ bản bị tan rã sau thắng lợi của của nhân dân các nước
A. Libi, Marốc.
B. Gana, Ghinê.
C. Marốc, Xuđăng.
D. Môdămbích, Ănggôla. Đáp án là: D. Môdămbích, Ănggôla </s> | [
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép chia 4525 : 5 là:
A. 405
B. 95
C. 905
D. 9025 Đáp án là: C. 905 </s> | [
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521,
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<s> Chọn đáp án đúng với câu hỏi: Phương thức biểu đạt chính của văn bản Vẻ đẹp của bài thơ Tiếng gà trưa là gì?
A. Tự sự
B. Miêu tả
C. Biểu cảm
D. Nghị luận Đáp án là: D. Nghị luận </s> | [
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1,
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865,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Quá trình phân giải không hoàn toàn phân tử đường để tạo năng lượng mà không có sự tham gia của O 2 và chuỗi truyền electron là
A. hô hấp tế bào.
B. chu trình krebs.
C. lên men.
D. hô hấp hiếu khí. Đáp án là: C. lên men. </s> | [
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Để thu được kim loại Cu từ dung dịch CuSO 4 theo phương pháp thuỷ luyện, có thể dùng kim loại nào sau đây?
A. Ca.
B. Na.
C. Ag.
D. Fe. Đáp án là: D. Fe </s> | [
1,
1,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một hợp chất hữu cơ Z có % khối lượng của C, H, Cl lần lượt là : 14,28%; 1,19%; 84,53%. CTPT của Z là:
A. CHCl 2.
B. C 2 H 2 Cl 4.
C. C 2 H 4 Cl 2.
D. một kết quả khác. Đáp án là: C. C 2 H 4 Cl 2. </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cat Ba Island is a wonderful place and suitable for _______.
A. ecotourism and adventure activities in the north of Vietnam
B. scientific research and exploration
C. experiencing urban life
D. many indoor activities Đáp án là: A. ecotourism and adventure activities in the north of Viet... | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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30030,
865,
325,
31280,
29875,
274,
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10459,
6000,
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2058,
322,
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1,
1,
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<s> Chọn đáp án đúng với câu hỏi: Hình thức chăn nuôi phổ biến ở Nam Âu là
A. Công nghiệp.
B. Bán công nghiệp.
C. Chăn thả.
D. Trang trại. Đáp án là: C. Chăn thả. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
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29884,
298,
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29875,
29901,
6324,
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207,
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29883,
10329,... | [
1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Berkeley Primary school was in 1930, originally as a separate infant and junior school.
A. founded
B. found
C. creating
D. created Đáp án là: A. founded </s> | [
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29941,
29900... | [
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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: Trong thời kì 1954 - 1975, thắng lợi nào là mốc đánh dấu bước chuyển của cách mạng miền Nam Việt Nam từ thế giữ gìn lực lượng sang thế tiến công?
A. Vạn Tường (1965).
B. "Đồng khởi" (1959 - 1960).
C. Tây Nguyên (3/1975).
D. Mậu Tha... | [
1,
1,
29871,
678,
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29871,
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29976,
29886,
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325,
31280,
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30057,
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228,
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29875,
29901,
1605,
549,
266,
29877,
207,
158,
30712,
29875,
8506,
30712,
29871,
... | [
1,
1,
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1,
1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X gồm C 2 H 2 và H 2 (có tỉ lệ mol tương ứng là 1 : 2). Đun nóng 10,08 lít (đktc) hỗn hợp X với xúc tác Ni, sau một thời gian thu được hỗn hợp khí Y. Dẫn hỗn hợp Y qua dung dịch nước brom dư, thấy bình brom tăng 3 gam và cò... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1... |
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