问题 单项选择题

根据以下资料,回答以下几题。

2008年底,我国网民数从1997年的62万增加到298亿,居世界第2位。其中宽带网民数达到2.7亿,手机网民数达到1.2亿。互联网普及率达到226%,超过全球平均水平。

2008年底,我国互联网的国际出口带宽由1997年的25.4Mbps增长到640286.7Mbps,l1年间增长了25207倍。2008年底,我国IPv4地址数已从2001年底的0.2亿个增加到1.8亿个,全球排名由第9位上升到第3位;域名总数达到1682.6万个。其中国家CN域名在2007年平均每天增长2万个,2008年底已达到1357.2万个,网站数由2000年的265万个增长到2008年的287.8万个,年均增长34.7%。2002年,我国的网页数为1.6亿个,2008年网页数达到160.9亿个。

2005年,我国电子商务交易额达到12992亿元人民币,相当于国内生产总值的7.1%。到2008年底,我国网络购物用户人数达到7400万,占网民总数的24.8%。2008年底,我国使用网络媒体的网民比例达到78.5%,使用电子邮件的网民比例达到56.8%,使用网上教育的网民比例达到16.5%拥有博客的网民比例达到54.3%。

下列说法与资料相符的是()。

A.2005年,我国国内生产总值超过18万亿元人民币

B.2008年底,全球互联网普及率的平均水平不低于25%

C.2008年底,我国平均每网站拥有网页数超过6000个

D.2007年初,我国国家CN域名数已达到627.2万个

答案

参考答案:A

解析:

[解析] A选项正确,2005年,我国电子商务交易额达到12992亿元人民币,相当于国内生产总值的7.1%,所以国内生产总值为12992÷7.1%≈18.3万亿,超过18万亿;B选项错误,2008年我国互联网普及率达到22.6%,超过全球平均水平,所以全球平均水平一定低于22.6%;C选项错误,2008年我国网站总数为287.8万个,网页数为160.9亿个,平均每网页拥有网站160.9亿÷287.8万≈5590个,没超过6000个;D选项错误,国家CN域名在2007年平均每天增长2万个,2008年底已达到1357.2万个,所以2007年初CN域名数为1357.2-366×2=625.2万,这里注意2008年为闰年有366天。所以正确答案为A。

单项选择题

Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap.For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users.Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century, there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States.A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice.

Which of the following statements is NOT true

A.Aspirin can relieve pain.

B.Aspirin can reduce fever.

C.Aspirin can relieve inflammation.

D.Aspirin can reduce stomach lining.

问答题 论述题