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问题 多项选择题

关于表信息的描述，正确的是（）

A.它是信息产生的源泉

B.它构成信息资源的核心部分

C.它是指为信息的收集、加工、处理、传递等活动而运用的一切技术和设备的集合

D.是非物质形态存在的信息的一显现的重要基础

E.是信息得以充分开发利用的必要条件

答案

参考答案：C, D, E

单项选择题

f（x）=x|x（x-1）（x-2）（x-3）|的可导的点是（）。

A．x=0

B．x=1

C．x=2

D．x=3
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阅读理解

To swim across the English Channel takes at least nine hours. It‘s hard work and it makes you short of breath. To fly over the channel takes only twenty minutes as long as you’re not held up at the airport， but it‘s an expensive way to travel. You can travel by hovercraft （气垫船）if you don’t mind the noise and that takes forty minutes. Otherwise， you can go by boat， if you remember your sea-sickness pills. All these means of transport have their problems， and the weary（厌烦的）traveler often dreams of being able to drive to France in his own car. “Not possible， you say. Well， wait a minute. People are once again considering the idea of a channel tunnel or bridge.” This time， the great London Council（议会）is looking into the possibility of building a channel link straight to London. A bridge would cost far more than a tunnel， but you would be able to make a journey by rail or by car on a bridge， yet a tunnel would provide a rail link only. Why is this idea being discussed again？ Is Britain realizing the need for links with Europe as a result of joining EEC？Well， perhaps， the main reason， though， is that a tunnel or bridge would reach the twenty square kilometers of London‘s discussed dockland（船坞）。 A link from London to the continent would stimulate（刺激） trade and revitalize（使重新具有活力）the port， and would make London a main trading center in Europe. With a link over the Channel， you could buy your fish and chips in England and be able to eat them in France while they are still warm！

小题1:From the lines we can see that people crossed the Channel by ______ in the past.

A．air

B．boat

C．swimming

D．A， B， or C小题2:The weary traveler thinks the best way to cross the Channel is ______.

A．by swimming

B．in his own car

C．by air

D．by hovercraft小题3:A tunnel would cost______ a bridge.

A．far less than

B．as much as

C．far more than

D．as little as小题4: The main idea of the passage is______.

A．how to develop the trade of London

B．when to cross the Channel

C．how to get to Europe from London more conveniently

D．what to do in the developing of traveling
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