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问题 填空题

电视机遥控器是利用      线来实现对电视机控制的。有时，我们把遥控器对着电视机周围的光滑墙壁也能实现控制，这是利用光的       原理．

答案

红外线 ；反射 。

电视机遥控器是利用红外线线来实现对电视机控制的。有时，我们把遥控器对着电视机周围的光滑墙壁也能实现控制，这是利用光的反射原理．

阅读理解

Shanghai is a nice city. The weather here is mild (温和的), that is, it is neither too hot nor too cold. It changes from season to season. Now many tall buildings have been set up one after another. But at the same time, the city is full of people. As a result, the traffic is terrible. Traffic jams (拥挤) happen during the rush(高峰) hours. If you want to go to a place far away, the fastest way is neither driving, nor riding a bike. It is often walking! The policemen in Shanghai are very helpful. Visitors can ask them for help if they lose their way or lose something. But when you disobey (违背)the traffic rules, they will be very strict with you. A lot of people in Shanghai can speak English. Travellers from English speaking countries feel at home here. Welcome to Shanghai.

小题1:The weather in Shanghai is _________.        

A．mild

B．hot

C．cold

D．cool小题2:The traffic in Shanghai is terrible because the city is full of _________.

A．many buildings

B．people

C．bikes

D．streets小题3:Sometimes the fastest way to a place far away is to go __________.

A．by taxi

B．by bike

C．on foot

D．by bus小题4:The policemen in Shanghai are always ready to __________.

A．disobey

B．work

C．talk

D．help小题5:English speaking people can often _________ people in the streets in Shanghai.

A．listen to

B．talk to

C．get

D．ask
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单项选择题

下列不支持艾滋病诊断的是（）

A.口咽念珠菌感染

B.持续发热

C.头痛，进行性痴呆

D.皮肤黏膜出血

E.慢性腹泻
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