单元六练习及答案

6.4 试完成下列单选题：1. All those second-hand goods are sold at ______ before.A. 30% as lower price asB. as 30% low price asC. 30% as low a price asD. 30% lower price than2. Smoking increases the risk of heart disease. The average smoker is about ______ to die ofa heart attack as a non-smoker.A. twice more likelyB. twice so likelyC. twice as likelyD. twice likely3. The coat I bought yesterday is not expensive at all. As a matter of fact, I would gladly have paid ______ for it.A. as much twiceB. much as twiceC. as twice muchD. twice as much4. With the help of the German experts, the factory produced ______ cars in 1993 as the year before.A. as twice manyB. as many as twiceC. as twice as manyD. twice as many5. Next to biology, I like physics ______.A. betterB. bestC. the betterD. very well6. The result is not very important to us, but if we do win, then so much ______.A. the bestB. bestC. betterD. the better7. It looks like the weather is changing for ______. Shall we stick to our plan?A. the worseB. worseC. the worstD. worst8. Autumn now approaching, the peasants are ______.A. at busiestB. at their busiestC. on busiestD. on their busiest9. “How are you getting on with your classmates?” “______. I've got to know them all.”A. Far betterB. Much pleasedC. Very comfortableD. Very good10. The explorer wrote in his report that the river is now ______.A. as wide as three timesB. three times its original (原来的) widthC. three times as its original widthD. wider three times than its original width11. —I don’t want to move to that city. It is heavily polluted.—Pollution is common. The city here is ______.A. no less cleanB. not cleanerC. no cleanerD. not less clean12. —You know Mr. White has been ill for a long time?—Well, I wonder if he is ______ better.A. muchB. anyC. noD. rather13. This washing machine is environmentally friendly because it uses ______ water and electricity than ______ models.A. less; olderB. less; elderC. fewer; olderD. fewer; elder14. Many people have donated that type of blood; however, the blood bank needs ______.A. someB. lessC. muchD. more15. The new group of students is better-behaved than the other group who stayed here ______?A. earlyB. earlierC. earliestD. the earliest16. Alan is a careful driver, but he drives ______ of my friends.A. more carefullyB. the most carefullyC. less carefullyD. the least carefully17. I am not sure which one of us was ______ when we happened to gaze into each other's eyes.A. more surprisedB. the more surprisedC. most surprisedD. the most surprised18. The population of many Alaskan cities has ______ doubled in the past three years.A. larger thanB. as great asC. as many asD. more than19. Nothing is so easy as ______ parents to raise their expectations of their children too high.A. ofB. toC. byD. for20. —Do you need any help, Lucy?—Yes, the job is ______ I could do myself.A. less thanB. more thanC. no more thanD. not more than21. There is an old proverb, “Love me, love my dog.” But there is _______ wisdom in this: “Love me, love my book.”A. someB. muchC. moreD. most22. Ten years ago the population of our village was ______ that of theirs.A. as twice large asB. twice as large asC. twice as much asD. as twice much as23. If tap water were as dangerous as some people think, ______ would be getting sick.A. a lot of more usB. more a lot of usC. a lot of us moreD. a lot more of us24. It is ______ to spend money on preventing illnesses by promoting healthy living rather than spending it trying to make people ______ after they are ill.A. good; goodB. well; betterC. better; betterD. better; good25. You’re driving too fast. Can you drive ______?A. more slowly a bitB. slowly a bit moreC. a bit more slowlyD. slowly more a bit26. The more I think about him, the more reasons I find for loving him ______ I did.A. as much asB. as long asC. as soon asD. as far as27. Tony can hardly boil an egg, still ______ cook dinner.A. lessB. littleC. muchD. more28. I have seldom seen my mother ______ pleased with my progress as she is now.A. soB. veryC. tooD. rather29. How much ______ she looked without her glasses!A. wellB. goodC. bestD. better30. Mr. Stevenson is great to work for—I really couldn't ask for a ______ boss.A. betterB. goodC. bestD. still better31. Mr. Black is very happy because the clothes made in his factory have never been ______.A. popularB. more popularC. most popularD. the most popular32. The children loved their day trip, and they enjoyed the horse ride ______.A. mostB. moreC. lessD. little33. After two years' research, we now have a ______ better understanding of the disease.A. veryB. farC. fairlyD. quite34. Speaking of all the songs he has written, I think this is probably his ______ one.A. better-knownB. well-knownC. best-knownD. most-known35. Though he started late, Mr. Guo played the piano as well as, if ______, Miss Liu.A. not better thanB. not betterC. no better thanD. better36. This is by far ______ movie that I have ever seen.A. an inspiringB. a much inspiringC. the most inspiringD. the more inspiring37. Raymond’s parents wanted him to have ______ possible education.A. goodB. betterC. bestD. the best38. t may not be a great suggestion. But before ______ is put forward, we’ll make do with it.A. a good oneB. a better oneC. the best oneD. a best one39. “Are you satisfied with her answer? ” “Not at all. It couldn’t have been ______.”A. worseB. so badC. betterD. the worst40. —Are you pleased with what he has done?—Not in the least. It couldn’t be ______.A. so badB. much betterC. any worseD. the best参考答案：1-5 CCDDB 6-10 DABAB 11-15 CBADB 16-20 DBDDB 21-25 CBDCC 26-30 AAADA 31-35 BABCB 36-40 CDBAC。