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16. Questions and exercises　 are given by the computer, which decides ______ to move the students ahead, review an easier level, ____ give more work on the same level.

　 A. either, or　　 B. both, and　　 .C. whether, or　　 D. not only, but also

15. -Will you go to Mary’s birthday party?

　 -No, ____ invited, I can’t go to it. I’ll be too busy then.

　 A. if　　　 B. unless　　 C. even though　　 D. when

14. The librarian promised to get the book for me ____she could remember who last borrowed it.

A. in case　　　　 B. if only　　　　 C. even if　　　 D. ever since

13.-What do you mean ______ saying “The boy is overgrowing”?

-I mean that he is tall ____ his age.

A. as to, for　　 B. by, for　　　 C. about, with　　　 D. by, to

12.-Do you like coffee or milk?

-Both. But I prefer coffee ____ milk.

　 A. to　　 B. for　　 C. with　　 D. from

11. ______ all the texts that are written,stored, and sent electronically, a lot of them are still ending up op paper.

　　 A. For　　　　 B. From　　　　 C. Although　　　　　　 D. By

10. I haven’t seen you for a couple of days . What have you been up 　　　　　?

　　　 A．in 　　　　　　　　　　 B．to　　　　　　　　　　　 C．with 　　　　　　　　　 D．for

9. The study you have been making _____ the ancient Chinese characters is an instructive job.

　　　 A．to 　　　　　　　　　　 B．for　　　　　　　　　　　 C．of　　　　　　　　　　　 D．from

8. 　　　　　so much electrical equipment , wood and paper in one place , there is a danger of fire .　　

　　　 A．For 　　　　　　　　　 B．In 　　　　　　　　　　 C．With 　　　　　　　　 D．By

7. Washington, a state in the United States, was named ______ one of the greatest American presidents.

　　　 A．in honor of 　　　　 B．instead of　　　　　　 C．in favor of　　　　　 D．by means of