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问题 单项选择题

青年病人，三个月前急性起病，意识清晰，表现说话难以理解，行为幼稚怪异，本能意向亢进，有片断的耳闻远方亲友声音的幻觉，觉有人跟踪。此病人不存在的症状是（）

A.行为倒错

B.本能亢进

C.行为幼稚

D.幻听

E.被跟踪感

答案

参考答案：A

完形填空

Fly the kite when a ___小题1:_____ appears to be coming on .Stand inside a door or under some __小题2:____, so that the silk ribbon does not get wet. Take care that the string doesn’t touch the wall or the door. When a thundercloud comes over the kite, the_小题3:__ piece of metal will pull the electricity from the cloud. The kite and the string will become __小题4:____. When the kite and the string are wet from the rain, they will conduct the electricity very well. You can _小题5:___ and store the electricity in the condenser and use it for other experiments
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单项选择题

RS-232C标准中逻辑0的电平为( )。

A．0V～15V

B．+5v～+15V

C．-3V～-15V

D．-5V～0V
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