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问题:

考点:中国哲学史中国哲学史题库
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国家最高科学技术奖获得者之一徐光宪,他深入研究国外的稀土分离理论和技术,1975年他提出串级萃取理论,对原来的分离工艺成功实施了改进,引导了我国稀土分离科技和产业的全面革新。他深入研究国外的稀土分离理论和技术,并和他的科研团队获得最新的“稀土萃取分离工艺的一步放大”技术,使传统的串级萃取小型试验被计算机模拟代替。现在的稀土生产已经人性化地变为了几个简单数据的输入。

问题:从《文化生活》角度谈谈徐光宪是怎样实现稀土分离技术的创新的?

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细菌

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When I first got an email account ten years ago, I received communications only from family,friends,and colleagues.Now it seems that every time I check my e-mail ,I have an endless seriers of advertisement and otner correspondence that do not interest the at all.If we want e-mail to continue to be useful,we need special laws that make spamming(发送垃圾邮件) a crime.

If lawmakers do not do something soon to prohibit spam,the problem will certainly get much worse。Computer programs allow spammers to send hundreds of millions of e-mails almost instantly 。as more and more advertisers turn to spam to sell their products ,individual(个人的)e-mail boxes are often flooded with spam e-mails。Would people continue to use e-mail if they ahd to deal with an annoying amount of spam each time?

This problem is troubling for inviduals and companies as well. Many spam emails contain computer viruses that can shut down the entire network of a company.Companies rely on e-mail on on e-mail for their Comployees to communicate with each other. Spam frequently causes failures in their local commnications networks, and their employees are thus unable to communicate effectively.such a situationg results in a loss of productivity and requires companies to repeatedly repair their networks.These computer problems raise productton costs of companies ,which are,in the end,passed on to the consumer.

For these reasons,I believe that lawmakers need to legislate (立法) against spam.Spammers should be fined,and perhaps sent to prison if they continue to disturb people.E-mail is a tool which helps people all over the world to communicate conveniently,but spam is destroying this conwenience.

1.What does the underlined word “correspondence” in the Paragraph 1 probably mean?                                                         

A.messages     B.ideas          C.connections         D.programs

2.According to the text, what is the major cause of the flooding spam?     

A.Companies rely on e-mail for communications.

B.More people in the world communicate by e-mail.

C.Many computer viruses contain spam e-mail.

D.More advertisers begin to promote sales through spam.

3.According to Paragraph 3,who is the final victim of spam?            

A. The business                B. The advertiser        

C.The employee               D.The consumer

4.What is the purpose of the text?

A.To inform                 B.To educate                 C.To persuade               D.To instruet

题型:名词解释

婴儿从母体获得的抗体开始消失的月龄是()。

A.1-2月以后

B.3-4月以后

C.5-6月以后

D.7-8月以后

E.9-10月以后

题型:名词解释

空分装置开工过程中的检漏工作结束后,并将系统保持在工作压力12小时,其残留率要求达到()。

A.90%

B.92%

C.95%

D.98%

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