13. To develop our senses is to take advantage of them to serve us students in our studies. Which can replace the underlined part?

　　 A. hold them firm　　　　　　　　 　　　 B. contribute to them　　　

C. stick to them　　　　　　　　　 　　　 D. use them to the full

12. Unfortunately, the soldier failed to ______ the gun on the table and was ______ fiercely by the enemies.

　　 A. wish for; bitten　　　 　　　　　　　　　　　 B. reach for; beaten　　

C. take out; stricken　　　 　　　　　　　　　　　 D. reach out; hit

11. Please ______ all the figures to see how much they ______.

　 add; add up to　 　　 B. add up; add up to 　 C. add up; add up 　　　 D. add; add to

10. I hate ______ when people talk with their mouths full.

　 A. that　　 　　　　　 B. it　　　 　　　　　　　　 C. these　 　　　　　　　 D. them

9. ______ she was sick, I was expected to take her place greatly surprised me, for I didn’t have much work experience.

　 A. That if　　　 　　 B. That　　　 　　　　　　 C. If that　　　 　　　　　 D. If

8. The girl ______ me by two games to one.

　 A. beat　　　 　　　 B. conquered　　　 　　 C. gained　　　 　　　　 D. won

7. Perhaps ______ most separates the successful people from others is ______ they live on purpose.

　 A. what; that　　　 B. that; what　　　 　　 C. that; that　　　 　　　 D. what; what

6. Some researchers believe that there is no doubt ______ a cure for AIDS will be found.

　 A. which　　　 　　　 B. what　　　 　　　　　　 C. that　　　 　　　　　　 D. whether

5. After the war, a new school building was put up ______ there had once been a theatre.

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

4. One way to avoid ______ by sharks is to keep calm and ______.

　 A. attacks; don’t be afraid　　　　　 　　　　 B. bites; don’t be frightened

C. being attacked; not be scared　　 　　　　 D. being bitten; not to panic