呈请性文件有（） A．通知 B．议案 C．调查报告 D．办法

一个生活在20世纪20年代初的英国人可以

①去法国欣赏印象派画展②去德国欣赏贝多芬作品音乐会③通过电视观看第14届奥运会④去电影院观看奥斯卡金像奖获奖影片

A．①②③④

B．①②③

C．①②

D．③④

不需要加任何指示剂，就能除去CaCl₂溶液中少量的HCl，得到纯净的CaCl₂溶液，可选用下列物质中的（　　）

A．生石灰

B．熟石灰

C．碳酸钙

D．碳酸钠

阅读理解。

    Social networking isn't only for the under 40s. More than 25 percent of Americans 50 years and

older stay connected using sites such as Facebook, MySpace and Twitter, according to new research.

   "The latest data tells us that more and more social networking is becoming a part of everyday life

for Americans 50 plus," said Kevin Donnellan, the chief communications officer at AARP, which

released the report.

     Nearly a quarter of older Americans are on Facebook and 73 percent said they use it to stay in

touch with relatives, but not just their children and grandchildren. "They are using the Internet to keep

up with the world and the people who are important to them," said Jean Koppen, the author of the

report. She added that older adults are also on Facebook to stay connected, not only with their family,

but with their friends and those in the same age group. Almost 50 percent of older adults were

introduced to the social networking sites by a family member, mainly a child or grandchild. "Just under

one-fifth of adults aged 50 and older say they do not use the Internet," according to the report.

    The findings are based on a telephone survey of 1,863 adults. In addition to keeping up on Facebook

and Twitter older adults are aware of the latest technology. Eighty-three percent had heard about the

Apple iPad and 11 percent intended to buy one.

    Despite the popularity of the Internet among the over 50s, they still mostly go to print newspapers

and magazines for news. Only one percent said they followed blogs.

1. What is the main idea of the text?

A.Social networking isn't for the under 40s in the U.S.A.

B.American old people's way of life is quite fashionable.

C.Social networking is becoming popular among older Americans.

D.Facebook, MySpace and Twitter are the most popular websites in the US.

2.Which of the following statements is TRUE according to the passage?

A.85% of Americans 50 plus choose the Internet over print media.

B.About 460 people in the telephone survey often use Facebook.

C.About 20% of adults aged 50 plus have access to the Internet.

D.Three quarters of the people surveyed got to know the Internet through their family.

3.From the text, it can be concluded that______.

A.many older Americans are open-minded about new developments

B.Kevin Donnellan approves of this change among older Americans

C.Young people should introduce their elders to new technology

D.In a high tech age it is difficult to avoid social networking

4.Where does the text probably come from?

A. A novel.                          

B. A newspaper.  

C. A technology guide.                

D. A student's research paper

且焉置土石？

在下列货币政策工具中，由于（）对经济具有很大的冲击力，中央银行在使用时一般都比较谨慎。

A、公开市场操作

B、再贴现政策

C、法定存款准备金政策

D、窗口指导