1．已知函數(shù)，若，則的所有可能值為(　　 )

A.1　　　　 　　　B.1或　　　　　 C.　　　　　 D. 1或

5.　　　 We are looking forward to your early reply

點評：

此文的長處在于：1. 在具體講解前先給出范例，讓學生對于標準的E-mail有直觀感受。然后結(jié)合范例進行講解，生動形象。2. 提供了大量的實用語料，對于學生的寫作有很大幫助。3. 另外，練習形式多樣，既有句子練習，也有融合在具體作文中的練習。4. 附加欄目新穎有趣，很能吸引學生的興趣。

4.　　　 we’ re very angry about this and we hope that you can give us a satisfactory explanation

3.　　　 What was worse, when we asked a waitress to bring us a fork, she pretended not to have heard us

2.　　　 We reserved our seats in advance

1.　　　 I’m writing this letter to complain about the poor service of your restaurant

10. Attached are the photos taken at the party.

9. If you have any question concerning our product, please feel free to contact me.

8. I hope you can give me an opportunity for an interview after reading my resume.

7. I must stop now. Please give my best wishes to your family.