28. The second half of his voyage was __________ dangerous part, during which he sailed round the Cape Horn.

A. more　 B. most　 C. the most D. the more

27. -Are you going to stay overnight?

-Not ___________it's really necessary.

A. if　 B. unless　 C. until　 D. since

26. A volunteer is a person willing to help others, one who offers to do something without ____________.

A. paying　 B. paid　 C. being paid　 D. to pay

25. The program 'Heart with Yushu, Love Has No borders"to1d touching stories about rescue volunteers, whose brave deeds_____________ never be forgotten.

A. can　 B. may　 C. need　 D. must

24. We didn't tell Susan about our p1an __________upsetting her.

A. for fear of　 B. regardless of　 C. in face of　 D. instead of'

23. Though the teacher had tried to make the problem easy_______, still Lily and her partner were at a loss.

A. understood　　　 B. understanding

C. to understand　　 D. to be understood

22. Parents give chi1dren _______pocket money to let them learn its value from experience at ____________ early age..

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

第一节　 单项填空(共15小题；每小题1分，满分15分)

　　 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

21. -Derek, I owe you a thank-you for all your he1p.

-__________

A. If you p1ease　 B. Don't mention it　 C. That's it　 D. All right