15、 Although the causes of cancer ____, we do not yet have any practical way to prevent it.

A. are being uncovered      B. have been uncovering  

C. are uncovering          D. have uncovered

14、 ____ team wins on Saturday will go through to the national championships.

A. No matter what B. No matter which   C Whatever          D. whichever

13、 We’re just trying to teach a point ____ both sides will sit down together and talk.

A. where              B. that  C. when    D. which

12、 Someone who lacks staying power and perseverance is unlikely to ___ a good researcher.

A. make               B. turn          C. get      D. grow

11、 I’d appreciate ____ if you would like to teach me how to use the computer.

A. that                     B. it                        C. this                  D. you

10、Engines are to machines ____ hearts are to animals.

A. as   B. that    C. what   D. which

9、 How did you find your visit to Qingdao, Joanna?

A. Oh, wonderful indeed   B. I went the alone  

C. First by train and then by ship   D. A guide showed me the way

8、For him ____ stage is just ___ means of making a living.

A. a; a     B.the; a      C. the ; the     D. a; the

7、

二、选择题

（每空？ 分，共？ 分）