问题 多项选择题

内镜手术器械的设计原则()。

A、考虑经过小的体表切口进行操作,因而手术器械都短小精致

B、手术中需要维持术腔来进行操作

C、在整形外科应用中,内窥镜进行的手术,都不存在固有的生理性腔隙,需要术者在术中用专门的器械分离形成并保持面部及乳腺后术腔,为手术创造条件

D、考虑经过小的体表切口进行操作,因而手术器械都有相当的长度

E、以上均正确

答案

参考答案:B, C, D

单项选择题
阅读理解

阅读理解

        Your friends might be in Australia or maybe just down the road, but they are all just a few clicks

away. Life has changed for millions of teenagers across the world who now make friends online.

Whether you use chat rooms, QQ, MSN or ICQ, you are part of a virtual community.

     "I rarely talk with my parents or grandparents, but I talk a lot with my old friends on QQ," said Fox's

Shadow, the online nickname used by a Senior 2 girl in China. "Eighty percent of my classmates use QQ

after school. "

      QQ is the biggest messaging service in China. A record shows 4 million people used it one Saturday

night in October, according to Tencent ( 腾讯公司),  the company which developed QQ.

      And Fox's Shadow might well have been one of them. "I log in on Friday nights, and Saturdays or

Sundays when I feel bored. I usually spend about 10 hours chatting online every week," she said. "But I

rarely talk with strangers, especially boys or men. "

   Even though she likes chatting, she is careful about making friends with strangers online. "You don't

know who you're talking to. You should always be careful about who you trust online. "

1. According to Tencent, about four million people _____ one Saturday night in October.  

A. enjoyed themselves on QQ

B. developed QQ

C. talked about QQ

D. made friends on QQ

2. Which of the following is NOT true according to the passage?   

A. Perhaps the person you are chatting with lives just next door to you.

B. Maybe the person you are talking with online is an oversea one.

C. No people online know the opposite's real name or real address.

D. Four fifths of Fox's Shadow's classmates use QQ in their spare time.

3. Fox's Shadow, according to the passage, is a _____ online nickname.

A. a boy's                      

B. a girl's

C. a QQ worker's              

D. mid-aged person's

4. When you are chatting online, _____ who is talking to you.     

A. never believe everyone

B. never trust anyone

C. don't make friends with the one

D. don't talk too long with the one