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 as

B. as 30% low price as

C. 30% as low a price as

D. 30% lower price than

2. Smoking increases the risk of heart disease. The average smoker is about ______ to die of

a heart attack as a non-smoker.

A. twice more likely

B. twice so likely

C. twice as likely

D. twice likely

3. 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 twice

B. much as twice

C. as twice much

D. twice as much

4. With the help of the German experts, the factory produced ______ cars in 1993 as the year before.

A. as twice many

B. as many as twice

C. as twice as many

D. twice as many

5. Next to biology, I like physics ______.

A. better

B. best

C. the better

D. very well

6. The result is not very important to us, but if we do win, then so much ______.

A. the best

B. best

C. better

D. the better

7. It looks like the weather is changing for ______. Shall we stick to our plan?

A. the worse

B. worse

C. the worst

D. worst

8. Autumn now approaching, the peasants are ______.

A. at busiest

B. at their busiest

C. on busiest

D. on their busiest

9. “How are you getting on with your classmates?” “______. I've got to know them all.”

A. Far better

B. Much pleased

C. Very comfortable

D. Very good

10. The explorer wrote in his report that the river is now ______.

A. as wide as three times

B. three times its original (原来的) width

C. three times as its original width

D. wider three times than its original width

11. —I don’t want to move to that city. It is heavily polluted.

—Pollution is common. The city here is ______.

A. no less clean

B. not cleaner

C. no cleaner

D. not less clean

12. —You know Mr. White has been ill for a long time?

—Well, I wonder if he is ______ better.

A. much

B. any

C. no

D. rather

13. This washing machine is environmentally friendly because it uses ______ water and electricity than ______ models.

A. less; older

B. less; elder

C. fewer; older

D. fewer; elder

14. Many people have donated that type of blood; however, the blood bank needs ______.

A. some

B. less

C. much

D. more

15. The new group of students is better-behaved than the other group who stayed here ______?

A. early

B. earlier

C. earliest

D. the earliest

16. Alan is a careful driver, but he drives ______ of my friends.

A. more carefully

B. the most carefully

C. less carefully

D. the least carefully