11. It does not alter the fact that he was the man ________ for the death of the little girl.

　　A) accounting B) guilty C) responsible D) obliged

　　12. Medical care reform has become this country’s most important public health ________.

　　A) question B) stuff C) matter D) issue

　　13. Not that John doesn’t want to help you, ________ it’s beyond his power.

　　A) but that B) for that C) and that D) in that

　　14. I used to smoke ________ but I gave it up three years ago.

　　A) seriously B) heavily C) badly D) severely

　　15. The doctor told Penny that too much ________ to the sun is bad for the skin.

　　A) exposure B) extension C) exhibition D) expansion

　　16. He decided to make further improvements on the computer’s design ________ the light of the requirements of customers.

　　A) on B) for C) in D) with

　　17. If you suspect that the illness might be serious you should not ________ going to the doctor.

　　A) put off B) hold back C) put aside D) hold up

　　18. If you want to know the train schedule, please ________ at the booking office.

　　A) acquire B) inquire C) request D) require

　　19. The coming of the railways in the 1830s ________ our society and economic life.

　　A) transformed B) transported C) transferred D) transmitted

　　20. In preparing scientific reports of laboratory experiments, a student should ________ his findings in logical order and clear language.

　　A) furnish B) propose C) raise D) present

　　答案：

　　1-5 DDCCB

　　6-10 DBBDA

　　11-15 CCABA

　　16-20 CABAD