小黑雅思基础语法练习及答案语法练习Complete the following sentences by circling the missing words.1. Science still a cure for cancer.a. doesn’t find c. hasn’t foundb. haven’t found d. aren’t finding2. While he a route to the Indies, Columbus discovered America.a. searched c. had searched forb. was discovering d. was searching for3. Existing reserves of fossil fuel by 2045.a. have been run out c. is going to be run outb. will have run out d. have run out4. If logging of tropical rainforests continues at the present rate, a 30 per cent increase inatmospheric CO2 by the year 2000.a. there will be c. there would beb. there might have been d. there could not have been5. Only by investing heavily in value-added exports from the present trade imbalance.a. the country can emerge c. can the country emergeb. the country might emerge d. the country emerged6. The mystery of the double helix , the scope for genetic engineering dramatically increased.a. having solved c. solvingb. having been solved d. solved7. Since the mid-’60s considerable research in embryo transplants .a. has carried out c. has been carried outb. was done d. was carried out8. several hypotheses have been advanced for the disappearance of the dinosaur, noconclusive evidence supports any of them.a. despite c. althoughb. in spite of d. in spite of the fact9. Until the 16th century the earth to be flat.a. is believed c. believedb. has been believed d. was believed10. If the temperature of the reactor 500C higher meltdown would have occurred.a. was c. was beingb. had been d. had11. adequate precautions are take, there is no risk involved in the operation.a. Although c. Neverthelessb. Providing d. Even12. My supervisor advised me to the problem.a. look ahead c. look out ofb. look down d. look into13. The more acid you add to the solution, it becomes.a. cloudier c. the cloudiestb. the cloudier d. more cloudy14. The lecturer said ‘It’s time you the literature review.’a. began c. should beginb. begin d. are beginning15. After studying our experimental results, the tutor suggested the experiment.a. us to repeat c. we repeatb. that we to repeat d. me to repeat16. After your results you should make an appointment with your tutor.a. you receiving c. you have receivedb. you would have received d. you received17. You the experiment twice, not once.a. should have carried out c. haven’t carried outb. shouldn’t have carried out d. couldn’t have carried out18. It looks you’ve made a mistake.a. as c. ifb. as though d. perhaps19. After receiving her results, the student stopped .a. to worry c. worryingb. having worried d. to be worried20. You include this section. It is not necessarya. must c. don’t needb. couldn’t d. don’t have to21. Unless an extension at least one week before the due date, it will not be given.a. you request c. you requestedb. you will request d. requesting22. The assignment made me .a. to think hard c. think hardb. thinking hard d. thought hard23. The scientists were prohibited the danger zone.a. to enter c. enterb. entering d. from entering24. the right answer I would have got full marks.a. Had I known c. If I’ll knowb. if I would have known d. If I was knowing25. The results were convincing that we decided to publish them.a. so c. veryb. such d. so much26. way you do it, the answer is always the same.a. However c. Who everb. whichever d. Why ever27. producing methane, the process also produces carbon monoxide.a. Apart c. Besidesb. As well d. In addition28. The biologist admitted excessive numbers of animals in laboratory tests.a. using c. being usedb. to use d. used29. A whale is a mammal, it is warm-blooded and gives milk to its young.a. who c. which means thatb. which d. that30. He appears minor problems.a. to have had c. was havingb. having d. hadGrammar Practice Answer1. C 11. B 21. a2. d 12. D 22. c3. B 13. B 23. d4. A 14. A 24. a5. C 15. C 25. a6. A 16. C 26. b7. C 17. A 27. c8. C 18. B 28. a9. D 19. C 29. c10. B 20. D 30. a小黑雅思培训已经推出：●雅思学员在线雅思口语学习平台；●在线雅思语法学习平台；●雅思阅读听力在线训练平台；●首家雅思视频网校；●《剑桥雅思八全真试题解析》在线预订和购买平台小黑雅思更多资料欢迎关注官方更新：电话：400-600-7921 （24小时客服）网站：博客：/eng86（全国公共雅思资料分享）微博：/liuzhiyun（小黑雅思学员全国服务平台，每日更新）信箱：*****************（小黑正式出版书籍答疑专用信箱）。