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阅读理解。

    We are all busy talking about and using the Internet, but how many of us know the history of the Internet?

    Many people are surprised when they find that the Internet was set up (建立) in the 1960s. At that time,

computers were large and expensive. Computer network (网络) didn't work well. If one computer in the

network broke down, then the whole network stopped. So a new network system (系统) had to be set up.

It should be good enough to be used by many different computers. If part of the network was not working,

information could be sent through another part. In this way computer network system would keep on working

all the time.

    At first the Internet was only used by the government (政府), but in the early 1970s, universities, hospitals

and banks were allowed to use it, too. However, computers were still very expensive and the Internet was

difficult to use. By the start of 1990s, computers became cheaper and easier to use. Scientists had also

developed software that made"surfing" the Internet easier.

    Today it is easy to get on-line and it is said that millions of people use the Internet every day. Sending e-mails

is more and more popular among young people. The Internet has now become one of the most important parts

of people's life.

1. How long has the Internet been used?[ ]

A. For about 10 years.

B. For about 20 years.

C. For about 40 years.

D. For about 60 years.

2. What would happen when one computer in the network broke down after the new network system was

    set up? [ ]

A. The other computers would wait.

B. The other computers would still work.

C. Some of the others still worked.

D. The other computers wouldn't work.

3. What is true about computers in the 1990s? [ ]

A. They became cheaper and easier to use.

B. They became larger and larger.

C. People couldn't buy them anywhere.

D. People could get information only from them.

4. What can we infer (推断) from the last sentence? [ ]

A. People will die without the Internet.　　　　

B. All people should set up (建立) their own network.

C. People live easily without the Internet. 　　　　　

D. People will more and more depend on (依赖) the Internet.

5. Which is the best title (题目) for this passage? [ ]

A. The History of the Internet

B. Computers and Information

C. Computers and the Government

D. The History of Computers

（一）背景资料：某内河航道工程包括20km航道疏浚和A、B两处礁石清除。施工单位在与业主签订合同后，按照承诺组织了-艘自航耙吸式挖泥船、一艘钻孔爆破船、一艘抓斗式挖泥船及其它辅助船机设备进场。在办理相关手续的过程中发现该河段分属两个海事局管辖，施工单位在规定的时间内向海事局提出了水上水下施工作业安全审核申请，海事局核发了有效期为三个月的《水上水下施工作业许可证》，并发布了航行通告，工程于2006年1月15日按期开工。在春节前的1月28日该项目监理组织了节前安全大检查，发现了如下一些问题：（1）没有制订《防护性安全技术措施》，要求限期制订提交；（2）在作业船舶有船员就餐时饮酒，要求严禁在船期闯饮酒；（3）生活区走道内，船员穿拖鞋行走，要求整改；（4）炸药库未建立爆破用品进出台帐，要求立即建立，认真填写；（5）炸礁作业的水上安全标志、灯光不够，要求增加安全标志和灯光标志船2艘。监理对上述存在的问题及隐患下达了监理通知，要求逐条落实整改。施工单位通过总结整改，完善了安全措施，同时又向监理提出了增加安全措施费用的要求。

施工单位在《许可证》三个月的有效期内未能完成施工作业，应该在何时办理何手续方始继续施工？

长期使用利尿剂最容易出现的不良反应是（）

A.恶心、呕吐

B.心律失常

C.血糖升高

D.血脂升高

E.电解质紊乱

ISO 9000族标准中，质量具有（）性等的性质。

A.适用

B.广义

C.相对

D.标准

雨雪干扰在显示特点是：（）

A、无规则的点状

B、径向虚线

C、疏松的棉絮状一片

D、时隐时显的光斑