11. Cars do cause us some health problems --in fact, far more serious ____ than mobile phones do.

　　A. one B. ones

　　C. it D. those

　　12. --Hi, Sam! You are late!

　　--I would have come earlier, but I _____ when would the party began.

　　A. know

　　B. hadn't known

　　C. didn't know

　　D. haven't known

　　13. ____ and no way to reduce her pain and suffering from the terrible disease, the patient sought her doctor's help to end her life.

　　A. Having given up hope of cure

　　B. With no hope for cure

　　C. It being no hope for cure

　　D. In the hope of cure

　　14. In ____ Chinese culture, marriage decisions were often made by parents for their children.

　　A. remote

　　B. historic

　　C. traditional

　　D. initial

　　15. While he was investigating ways to improve the telescope, Newton made ____ discovery which completely changed ____ man's understanding of colour.

　　A. a; / B. a; the

　　B. /; the D. the; a

　　16. This year has ____ a big increase in road accidents, causing masses of deaths.

　　A. looked at B. watched

　　C. observed D. seen

　　17. Kathy ____ a lot of Spanish by playing with the native boys and girls while he was in Spain.

　　A. picked up B. took up

　　C. made up D. turned up

　　18. In Switzerland, six miles west of Geneva, ____ a collection of laboratory buildings.

　　A. lie B. are lying

　　C. lies D. lays

　　19. --If our parents would listen more to us, they would understand us better.

　　--____ . They just expect us to listen.

　　A. I believe not B. No problem

　　C. Good idea D. I can't agree more

　　20. The research is so designed that once ____ nothing can be done to change it.

　　C. beginning D. begun

　　参考答案：

　　1—5 BACDB 6—10 ACACA

　　11—15 BCBCA 16—20 DACDD