thanks
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12 tháng 2 2022
1. - Peter: - “How are you today, Mary?” - Mary: - “__________”
A. Thanks B. No, thanks C. Fine, thanks D. Yes, thanks
2. Mr. Brown__________ as a doctor since 2016.
A. worked B. has worked C. works D. have worked
3. He is the__________ student in die class, base on his high grade.
A. smartest B. smarter C. smart D. more smart
4. I am the boy__________ is wearing a white T-shirt.
A. whom B. which C. whose D. who
5. It all depends__________ my parents. Anyway, we'll keep in touch.
A. in B. at C. of D. on
6. He never eats fish, __________?
A. doesn't he B. does he C. isn't he D. did he
7. The telephone__________ by Alexander Bell.
A. invented B. invent C. was invented D. is invented
8. If you work hard, you__________ in the final examination.
A. will succeed B. succeed C. would succeed D. had succeeded
9. The doctor suggested that his patients__________ smoking.
A. stopping B. to stop C. should stop D. stops
10. - Nam: - “That's an excellent story, Lan” - Lan: - “__________”
A. Never mind B. It's kind of you to say so
C. No, thanks D. Don't say so
MN
12 tháng 2 2022
1. - Peter: - “How are you today, Mary?” - Mary: - “__________”
A. Thanks B. No, thanks C. Fine, thanks D. Yes, thanks
2. Mr. Brown__________ as a doctor since 2016.
A. worked B. has worked C. works D. have worked
3. He is the__________ student in die class, base on his high grade.
A. smartest B. smarter C. smart D. more smart
4. I am the boy__________ is wearing a white T-shirt.
A. whom B. which C. whose D. who
5. It all depends__________ my parents. Anyway, we'll keep in touch.
A. in B. at C. of D. on
6. He never eats fish, __________?
A. doesn't he B. does he C. isn't he D. did he
7. The telephone__________ by Alexander Bell.
A. invented B. invent C. was invented D. is invented
8. If you work hard, you__________ in the final examination.
A. will succeed B. succeed C. would succeed D. had succeeded
9. The doctor suggested that his patients__________ smoking.
A. stopping B. to stop C. should stop D. stops
10. - Nam: - “That's an excellent story, Lan” - Lan: - “__________”
A. Never mind B. It's kind of you to say so
C. No, thanks D. Don't say so
11. I am__________ that people have spoiled this area.
A. disappointed B. disappointment C. disappointing D. disappoint
12. Hoa failed her math test.__________, she has to do the test again.
A. However B. Because C. Moreover D. Therefore
13. I wish_______an astronaut on the future
A. were B. to be C. would be D. will be
14. Let’s wait for them here. I’m sure that they will _____soon.
A. turn off B. turn up C. turn down D. turn over
15. Mr. and Mrs. Blake were delighted when they _____to sell their house so quickly.
A. succeeded B. could C. risked D. manage
16. The man asked me .....................
A. where had I gone the previous day. B. where I had gone the previous day.
C. where I had gone yesterday. D. where did I go yesterday.
17. Jenny refused to explain the reason ..................... her absence from class last week.
A. why B. about C. for D. of
18. The party was great! Everyone enjoyed ..................... very much.
A. themselves B. ourselves C. oneself D. itself
19. Nguyen Du is considered one of the best ..................... that Vietnam has ever produced.
A. poets B. poems C. poetry D. poetic
21. Please don't put much salt in the soup. Just ......................
A. few B. a few C. a little D. little
22. The police are looking for the man ..................... car was found in the jungle last night.
A. whose B. whom C. who D. his
23. It is high time we.....................something to protect rare animals from extinction.
A. did B. do C. will do D. are doing
24. Despite working in the same office, Mary earns ..................... her boyfriend.
A. twice as many as B. twice more than C. twice as more than D. twice as much as
25. Jack never helps his mum with the housework,.....................?
A. does he doesn't he C. will he D. did he
26. When the boy was told that he had failed the exam, he was extremely .....................
A. disappointing B. disappointedly C. disappointed D. disappointment
27. "No, you are not allowed ..................... out tonight, Mike," the father said angrily.
A. to go B. going C. to going D. go
28. "The room is too dirty! Do you think it needs...................., honey?" said the wife.
A. to clean B. cleaning B. to be cleaning D. cleaned
29. I think your health will not improve ..................... you give up smoking.
A. if B. when C. unless D. until
30. Can you close the gate ..................... the hens will not go out?
A. so as to B. in order to C. in order for D. so that
DT
0
I3
23 tháng 11 2021
ƯC của(−15;+20) là: {±1;±5}
đây là theo hiểu biết của mk thôi nha, ko chép ai đâu^^
MT
1
29 tháng 12 2015
LƯU Ý
Các bạn học sinh KHÔNG ĐƯỢC đăng các câu hỏi không liên quan đến Toán, hoặc các bài toán linh tinh gây nhiễu diễn đàn (như 1+1 = ?). Online Math có thể áp dụng các biện pháp như trừ điểm, thậm chí khóa vĩnh viễn tài khoản của bạn nếu vi phạm nội quy nhiều lần.
Chuyên mục Giúp tôi giải toán dành cho những bạn gặp bài toán khó hoặc có bài toán hay muốn chia sẻ. Bởi vậy các bạn học sinh chú ý không nên gửi bài linh tinh, không được có các hành vi nhằm gian lận điểm hỏi đáp như tạo câu hỏi và tự trả lời rồi chọn đúng.
Mỗi thành viên được gửi tối đa 5 câu hỏi trong 1 ngày
10 tháng 5 2019
Thanks to new technology, we now have super smart TVs, smart phone.
k minh
10 tháng 5 2019
1. ____ new technology, we now have super smart TVs, smart phone.
A. Because B. Because of C. Thanks D. Thanks to
Đặt 2x + 1 = a
ĐK a khác 0 ; -1
pt <=> \(1+\frac{1}{a^2}+\frac{1}{\left(a+1\right)^2}=4\)
=> \(\frac{a^2\left(a+1\right)^2+\left(a+1\right)^2+a^2}{a^2\left(a+1\right)^2}=4\)
=> \(\frac{a^2\left(a^2+2a+1+1\right)+\left(a+1\right)^2}{a^2\left(a+1\right)^2}=4\)
=> \(\frac{a^4+2a^2\left(a+1\right)+\left(a+1\right)^2}{a^2\left(a+1\right)^2}=4\)
=> \(\frac{\left(a^2+a+1\right)^2}{a^2\left(a+1\right)^2}=4\)
=> \(\frac{a^2+a+1}{a\left(a+1\right)}=2\) hoặc \(\frac{a^2+a+1}{a\left(a+1\right)}=-2\)
Giải a tìm x