题目内容

B型题 mRNA的5’端“帽子”结构是（）.

A. GPPPmG结构
B. 多聚A结构
C. hnRNA
D. 假尿嘧啶核苷
E. CCA—OH结构

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The book (address) () mainly to chemical, environmental and mechanical engineers.

W: Welcome, Mc Johnson. Take a seat, please. Our manager will be back soon.M: Thank you. Urn, it’s rather warm these days, isn’t itW: Yes. The weather is quite unusual at this time of year.M: You’re right. Er...do you mind if I take off my jacket thenW: Sure. Make yourself at home.M: Thank you, that’s better. Urn...do you mind if I smoke I notice nobody’s smoking around here.W: Well, I’m sorry, but this is a non-smoking Office building.M: Oh, that’s OK. I’m trying to quit it anyway. By the way, may I use your phone to book a table.., for lunchW: Yeah. Sure. Do you know which restaurant is goodM: Oh, yeah, absolutely.W: Fine. The phone is over there.M: Thank you. Why can’t the man smoke here()

A. The woman doesn’t like smoking.
B. This is a non-smoking area.
C. The place is air-conditioned.
D. Nobody smokes here.

A -- toastB -- menuC -- cheersD -- hospitalityE -- waiterF -- orderG -- billH -- invitation cardI -- waitressJ -- dining tableK -- dessertL -- main courseM -- beverageN -- specialtyO -- soup ()账单()特色菜

根据下面的文件名，能判断是Word文档的是( )。

ABC.dot
B. abc.xls
C. Word.wod
D. myfile.doc