| 听对话、短文和问题，选择正确答案。 |
| 1. How long will Lisa stay in Beijing? [ ] |
A. For four days.
B. For five days.
C. For six days |
| 2. What's her telephone number in Beijing? [ ] |
A. 010-88960723.
B. 010-88960724.
C. 010-88960732. |
| 3. What is the speaker talking about? [ ] |
A. Australian schools.
B. Mobile phones.
C. Teachers and students. |
| 4. Why shouldn't mobile phones be allowed in middle schools? [ ] |
A. Because they trouble students' studies.
B. Because they' re too expensive.
C. Because they help students find their parents easily. |
| 5. What does the speaker want to says? [ ] |
A.The computer is not useful in our life.
B. It's helpful to surf the Internet.
C. Don't spend too much time surfing the Internet. |
| 6. When can we do with the Internet? [ ] |
A. We can get some informatiom.
B. We can get everything we want.
C. We and make as much money as possible. |
| 7. When did Anna win the Oscar? [ ] |
A. Last year
B. This year
C.The year before last |
| 8. Was Ann surprised when she won an Oscar? [ ] |
A. A little bit
B. No, she wasn't
C. Yes, she was. |
| 9. Who helped Anna to solve her problem? [ ] |
A. The director
B. Her teachers
C. Her parents |
| 10. What's Ann's advice for young actors? [ ] |
A. They should not learn from others.
B. They should be themselves all the time.
C. They must believe in their own talents. |
+1，b=
，则a与b和关系是（ ）
项的数列
，
，定义向量
、
，若
，则满足条件的数列
