问题 单项选择题

《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-2006规定:当采用阻气袋阻断气源时,应使管线内燃气压力()阻气袋有效阻断工作压力。

A.绝对高于

B.低于

C.等于

D.略高于

答案

参考答案:B

阅读理解

阅读理解

    "Who needs  a  shopping mall (购物中心 ) if you have Taobao?" says Wang Lin,28,a writer in

Beijing. Taobao ,China's largest online shopping site(网上购物网站),has become an important part

of Wang Lin's life. She spends lots of money on Taobao. A growing number of Chinese Internet users

like Wang have found the joys of online shopping. Most online shoppers are students or young workers. More women shop on line than men. Clothing and home-use products are the most popular on line. It

was reported that more than 250 billion yuan, was spent on online shopping last year,80% through

Taobao. Taobao means "looking for treasure" in Chinese. People can find almost everything they need

on Taobao,from clothes to books,from candies to DVD players. " You may question the security of

online shopping," Wang Lin said,"It's very safe and convenient. Unless you receive the products from

the sellers and are satisfied with them,the shop owner will not get the money. You can also get your

money back if you want to return the products. "

1. What are the most popular on line? 

A. Candles and DVD players.

B. Clothes and books

C. Clothing and home-use products

2. Taobao is       .

A. a shopping mall

B. an online shopper

C. an online shopping site

3. Most online shoppers are          .

A.young

B.old

C.babies

4.What does the underlined word "security" mean?

A.质量

B.安全

C.信誉

5. Which  is the best title (标题) of the passage?

A. Wang Lin's life

B. Online shopping in China

C. Shopping on line is not safe

单项选择题