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2 năm trước
Cho cà chua quả tròn TC lai với quả dài thụ đc F1.Cho F1 tự thụ phấn đc F2 Biện luận và viết sơ đồ lai từ P->F2 Giải thích+ctlhn
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giúp với ạ, phiền mọi người khi ghi đáp án ghi cả giải thích vào luôn 16. My suggestion is that the sick boy_______to hospital as soon as possible. A. is taken B. must be taken C. be taken D. has to be taken 17. If we had not missed the bus, we_______lunch at home now. A. would have had B. would have C. must be having D. would be having 18. _______ here yesterday, he would attend the lecture with us today. A. Had he been B. If he were C. Were he D. Should be he 19. His tired face suggested that he_______really tired after the 1ong walk. A. had been B. was C. be D. should be 20. Do you feel that I_______the problem in a different way the other day? A. should come B. should have solved C. have solved D. solved 21. 0ur chairman hasn’t come yet. If he _______on time, we would have to put off the meeting. A. should come B. would come C. shouldn’t come D. doesn’t come 22. He insisted that he _______ really very tried and that he _______to have a rest. A. was / be allowed B. was / must be allowed C. should be / must be allowed D. should be / be allowed 23. He did his best in everything / _______he would not have been what he was. A. and B. but C. otherwise D. but that 24. I do_______ I could give you a hand. A. hope B. wish C. expect D. think 25. I Would rather she_______ tomorrow than today. A. come B. came C. should D. has come 26. The guard at the gate insisted that everybody_______the rules. A. obeys B. obey C. will obey D. Would obey 27. I _______her if I thought she would understand. A. would tell B. will tell C. Would have to1d D. told 28. The teacher requires Rose _______by heart 15 English words each day. A. 1earn B. to learn C. must learn D. 1earning 29. –“If he ________, he ________that food.” –“Luckily he was sent to the hospital immediate1y.” A. Was warmed / would not take B. had been warmed / wou1d not have taken C. would be warmed / had not taken D. would have been warmed / had not taken 30. Without electricity human life_______quite different today. A. is B. will be C. would have been D. Would be

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