长度、横截面积及受轴向外力均相同的钢杆和铝杆，下面说法中正确的是（）。 A.两杆的应

阅读并补全对话。（共5小题；每小题1分，计5分）
从方框内选择适当的句子补全对话，其中有两项是多余的。
M: You look so happy, Marry. 小题1:　　　　
W: There’s a concert in the theatre this evening. Some world famous singers will come and sing in the concert. 小题2:　　　　
M: Yes, I have already read about the news in the newspaper. The singers are trying to collect money for the people in Qinghai.
W: That’s great. 小题3:　　　　
M: OK. Let’s go to the concert together. 小题4:　　　　
W: 100 yuan a person.
M: All right. Let’s meet at the 7:50 pm, OK?
W: It’s a bit late. 小题5:　　　　  
M: OK. See you then. Bye.  
W: Bye.

A. We should also do something for them. B. Have a good trip. C. What’s news? D. How about 20 minutes earlier? E. See you later. F. How much is the ticket? G. Have you heard the news, Mike?