27. Eating too much fat can______ heart disease and cause high blood pressure.

A. result from　　 B. contribute to　 C. attend to　 D. lead in

26. You said boys were cleverer than girls. That is _______ I disagree.

A. what　　 B. where　 C. which　 D. why

25. --- Nancy is not coming tonight.　　 --- But she______!

A. promises　　 B. promised　 C. will promise　 D. had promised

24. The bell______ the end of the period rang and we had to stop our discussion.

A. indicating　 B. indicated　 C. to be indicated　 D. being indicated

23. ---I hear John refused to tell the truth and was taken away by the police.

　 --- Where did you _______?

A. pick that up　　 B. put that up　 C. make that up　 D. take that up　

22. ---Are all telephone numbers_______ in the directory?　　 --- Yes, all ________ Jane’s.

A. listed; including　　　　 B. listed; included

C. including; includes　　　 D. being listed; being included

第一节、单项选择(15分)

21._____ we were worried about was _______ they could manage to control the pollution.

A. That; how　 B. That;　 whether　　 C. What;　 that　 D. What; whether

22、已知定义在[1，4]上的函数f(x)=x²-2bx+(b≥1)，

(I)求f(x)的最小值g(b)；