合成DNA的原米料是A．dAMP、dGMP、dCMP、dTMP B．dADP、dGD

血-气屏障（呼吸膜）由哪几部分组成？

阅读理解。

Dear Teresa Silva,

     The official of the university has reported to us that you are an English major who meets the high

standards for membership in Sigma Tau Delta. As is known, Sigma Tau Delta was founded in 1924 at

Dakota Wesleyan University. It is an international collegiate honor society for students of English. It

presently has over 850 chapters in the United States, Europe, the Middle East, and the Caribbean .

Over 9,000 new members are admitted into the organization annually.

     Sigma Tau Delta's purpose is to promote literature and writing and to advance the study of the

written word. Members gather annually in the spring at the international meeting to present papers and

share experiences and ideas within the English subject. The Society offers tens of thousands of dollars

in scholarships, awards, as well as publication chances in its journals The Rectangle and The Sigma

Tau Delta Review.

     It is our pleasure if you can complete the application for Sigma Tau Delta membership. If you would

like to be included in this spring's induction (入会) ceremony, please complete the application form, and

include amount to cover both local and international fees. Your completed form must be received by date

to be considered for the upcoming induction ceremony.

     We congratulate you on your outstanding academic record and hope you will join us as a Sigma Tau

Delta member. If you want to get more information, please visit our website www.sigmataudelta.org, or

give us a call. The phone number is 583-2864.

                                                                                                  Sincerely,

                                                                                                  Emily Lister

1. According to the passage, Sigma Tau Delta ______.

A. deals with language learning      

B. opens its door to all the students of English

C. changes its members every year    

D. mainly takes charge of scientific publications

2. At the annual meeting, members of Sigma Tau Delta have the chance to ______.

A. meet all the chapter leaders            

B. receive tens of thousands of dollars

C. share experiences and views              

D. choose a particular subject as a major

3. This passage is basically a letter of _____.

A. introduction      

B. congratulation      

C. thanks          

D. invitation

Do you ever run out of great books to read? So what should I read next? Is fast-paced crime fiction your thing? Try the new Patricia Cornwell book, Scarpetta (Putnam). She is such an able writer and handles complex forensic(法庭的) intelligence with ease. You need to be prepared, though, for the world you're entering—this isn't for the faint of heart, let's say.

If peace is more your thing, try Mary Pipher's wonderful new book, Seeking Peace:Chronicles of the Worst Buddhist in the World (Riverhead). Mary is a lovely, comfortable writer who takes the reader through her personal awakening after reputation and fortune came her way. Even if you've never experienced life as a bestselling writer (as she has done, in her book years back, Reviving Ophelia), you'll totally understand and sympathize with her renewed need for privacy, distance and quiet.

What if you want a straightforward, totally thrilling read with vivid characters, set about World War II? You cannot go wrong with Jim Lehrer's new novel, Oh, Johnny (Random House), about a young Marine whose life is changed forever when he meets a woman on his way to war. His relationship with her lasts him through danger and hardship, and there's an impressive ending. See our interview with the productive novelist/newsman in the current issue of Reader's Digest (March, on stands now), by the way, for insight into the very talented Mr. Lehrer and what interests him.

Well, what about something wickedly funny and totally offbeat? Does the name Carrie Fisher do anything for you? Try her vivid and new life in Hollywood and elsewhere, Wishful Drinking (Simon & Schuster). Be prepared for humor as sharp as knives.

小题1: In which column will you probably find the above passage?

A．Advice.

B．News story.

C．Advertisement.

D．Comments.小题2: What does the writer intend to tell us by the underlined sentence?

A．The world is complex and hard.

B．Scarpetta is a thriller.

C．The fiction is hard to understand.

D．Society is hard to fit into.小题3: Which of the following is true of Mary Pipher?

A．She is an adventurous writer.

B．She doesn’t care about fortune.

C．Her books normally sell well.

D．She can help you achieve writing skills.小题4:To get further information about Jim Lehrer, you may________.

A．go to Reader’s Digest issued in March

B．go to Random House

C．analyze the characters in Oh, Johnny

D．read the novel Oh, Johnny小题5:Which book isn’t directly based on the writer’s own life?

A．Seeking Peace.

B． Reviving Ophelia.

C．Wishful Drinking.

D．Oh, Johnny.

设计一个大型信息系统首先必须有

A．一个原型系统作参考

B．一个系统规划作指导

C．一个开发工具作支持

D．一个逻辑方案作依据

按照作用方式可将基因工程药物分为三类，下列不是的是（）

A、基因水平作用药物

B、转录水平作用药物

C、疫苗水平作用药物

D、蛋白质水平作用药物