问题 多项选择题

质谱的质量分析器有()。

A、单聚焦

B、双聚焦

C、飞行时间

D、四极杆

答案

参考答案:A, B, C, D

写作题

书面表达。

      假定你叫张强,从报上看到北京招聘2008 奥运会志愿者(a volunteer for the 2008 Olympics)的

广告。请你写封简短的应聘信,介绍自己情况(见下表),表示愿意为奥运会做一些工作,请组委

会考虑并尽早予以答复。 注意:词数70 左右。信的开头和结尾已给出。

June 22,2003

Dear Sir,

      I read your ad in the newspaper yesterday.                                                                                    

                                                                                                                                                       

                                                                                                                                                       

      Best wishes!

                                                                                                                                     Truly yours,

                                                                                                                                     Zhang Qiang

补全对话,情景问答