25.Carl Linnaeus made great contributions to ________ plant species.

A. group　　　 B. have grouped　 C. grouping　 D. been grouping

24. He observed a stranger _______ around the store at 12 p.m. last night.

A. to hang　　 B. hang　　　　 C. hanging　　 D. to be hanging

23. Once ______ , the plan can’t be changed.

A. begin　　　 B. beginning　　 C. began　　　 D. begun

22.They asked me so many ______ questions that I got ______.

　A. confusing; confusing　　　 B. confused; confusing

C. confused; confused　　　　 D. confusing; confused

第一节：单项填空(共15小题；每小题1分，满分15分)

21.Jumping out of ______ airplane at ten thousand feet is quit ____ exciting experience.

　A. \; the　　　 B. \;an　　　　 C. an; an　　　 D. the; the

第三节(共3题，3分)

听下面一段材料，把18-19小题补充完整，每小题不超过三个单词。

第二节(共12小题，12分)

听第六段材料，回答第6至8题。

6. What’s wrong with the teatcher?

　A. He smokes a bit.　 B. He built a big chimney.　 C. He is a heavy smoker.

7. What should their teacher do according to the two speakers?　

　A. Go on like that.　　 B. Give up smoking.　　 　C. Take no medicine.

8. What are they likely to do next?

　A. Buy some medicine.

B. Try to persuade their teacher to stop smoking.

C. Ask their teacher not to be worried.

听第七段材料，回答第9至11题。

　9. Where does this dialogue take place?

　 A. In the restaurant.　 　　　B. On the phone.　　 C. On the street.

　10. When does the restaurant stop lunch?

　 A.At 1 p.m　　　　　　　 B. At 2 p.m　　　　　 C. At 3 p.m

　11. What time will the woman come for lunch?

　 A. 2 p.m. today　　　　　 B. 3 p.m. today　　　 C. 2 p.m. tomorrow.

听第八段材料，回答第12至14题。

　12. What does the man think of the weather?

　 A. Unpleasant.　　　　　 B. Comfortable.　　　 C. Excited.

13. Why does the man want to leave in a hurry?

　A. To do some work.　　　 B. To do some shopping.　 C. To do some cleaning.

14. What does the man think of winter?

　A. He dislikes winter.　　 B. He likes winter very much.

　C. He has exercise in the morning in winer.

听第九段材料，回答第15至17题。

　15. Where did this conversation take place?

　 A. At a store for children’s clothes only.

B. At a department store.　　　　 C. At a jewelry store.

　 16. What was the man’s trouble?

A. He found it difficult to choose a present for his mother.

B. He couldn’t afford to buy a handbag for his mother.

C. He forgot to carry some money with him.

　 17. What did the man finally decide to buy for his mother’s birthday?

　　 A. A fine handbag.　　 B. A nice dress.　　 C. Some skirt materials.

第一节(共5小题，5分)

1.　　　 What time is it now?

　A. 7:15　　　　 B. 6:40　 　　　　C. 7:45

2. What does the man think about the woman’s hat?

　A. It’s very good.　

B. It doesn’t go well with her dress.

C. He likes the style of it.

　 3.What does the man mean?

A. He doesn’t know the park.

B. The park is nearby.

C. There is no park here.

　 4. What does the man mean?.

A. The woman should gp away.

B. He will get closer to her.

C. He can hear her very well.

　 5. What is the problem?

A. The woman doesn’t like orange juice.

B. The man was looking for orange juice.

C. The man broke the container of juice.

19、已知盒中装有仅颜色不同的玻璃球6个，其中红球2个、黑球3个、白球1个.

(I)从中任取1个球, 求取得红球或黑球的概率；

(II)列出一次任取2个球的所有基本事件.

(III)从中取3个球，求至少有一个红球的概率.

18、先后随机投掷2枚正方体骰子，其中表示第枚骰子出现的点数，表示第枚骰子出现的点数。设点P的坐标为。　

(Ⅰ)求点在直线上的概率；

(Ⅱ)求点满足的概率。