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lebalinhthtd
2 năm trước
5. Con lắc lò xo dùng lò xo độ cứng100 N/m treo một vật nặng 0,5 kg thì khi cho dao động tự do thì chu kỳ là bao nhiêu? Con lắc sẽ thực hiện được bao nhiêu dao động trong 20 s?
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If I __________the same problem you had as a child, I might not have succeeded in life as well as you have. a. have B. would have C. had had D. should have 2. I __________you sooner had someone told me you were in the hospital. a. would have visited B. visited C. had visited D. visit 3. __________more help, I would call my neighbor. a. needed B. should I need C. I have needed D. I should need 4. __________then what I know yesterday, I would have saved myself a lot of time and trouble over the years. a. had I known B. did I know C. If I know D. If I would know 5. Do you think there would be less conflict in the world if all people __________the same language? a. spoke B. speak C. had spoken D. will speak 6. If you can give me one good reason for your acting like this, __________this incident again. a. I will never mention B. I never mention c. will I never mention D. I don’t mention 7. If I had known you were asleep, I __________so much noise when I came in. a. didn’t make B. wouldn’t have made c. won’t make D. don’t make 8. Unless you __________all of my questions, I can’t do anything to help you. a. answered B. answer C. would answer D. are answering 9. Had you told me that this was going to happen, I __________it. a. would have never believed B. don’t believe c. hadn’t believed D. can’t believe 10. If Jake __________to go on the trip, would you have gone? a. doesn’t agree B. didn’t agree C. hadn’t agreed D. wouldn’t agree 11. J: “John went to the hospital alone”, K: “If __________,I would have gone with him”. a. had he told me B. he had told me C. he has told me D. he would tell me 12. If you __________, I would have brought my friends over to your house yesterday to watch T.V, but I didn’t want to bother you. a. had studied B-studied C. hadn’t studied D. didn’t study 13. Peter: “Did you need help with your Math last night?”. Mary: “If I had needed, I __________you”. a. would call B. called C. would have called D. will call 14. If someone __________ in to the store, smile and say, “May I help you?” a. comes B. came C. come D. should come 15. “Here’s my phone number”. “Thanks. I‘ll give you a call if I __________some help tomorrow” a. will need B. need C. would need D. needed 16. If I didn’t work for an accounting firm, I __________in a bank now. a. work B. will work C. have worked D. would work 17. The death rate would decrease if hygienic conditions __________improved. a. was B. is C. were D. had been 18-The education in Japan __________if the basic principles of education had not been taken into consideration. a. would go down B. would have gone down c. went down D. had gone down 19. If there __________, the rice fields could have been more productive. a. had been enough water B. were enough water c. would be enough water D. are enough water 20. The patient will not recover unless he __________ an operation. a. had undergone B. would undergo C. undergoes D. was undergoing 21. If she __________ him, she would be very happy. a. would meet B. will meet C. met D. should meet 22-If he __________ a thorough knowledge of English, he could have applied for this post. a. had had B. had C. has D. has had 23. If I had enough money, I__________ abroad to improve my English. a. will go B. would go C. went D. should have go to 24.The bench would collapse if they __________on it. a. stood B. stand C. standing D. stands 25-If it __________convenient, let’s go out for a drink tonight, a. be B. is C. was D. were

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