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问题 单项选择题

溶栓后出现的再灌注性心律失常，下列哪种指标判断冠脉是否再通最敏感（）

A.加速性室性自主心率

B.室性心动过速

C.室性期前收缩

D.房室传导阻滞

E.心室纤颤

答案

参考答案：A

单项选择题

Internet提供的最简便、快捷的通信服务称为______。

A．文件传输(FTP)

B．远程登录(Telnet)

C．电子邮件(E-mail)

D．万维网(WWW)
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单项选择题

The process of gaining or losing weight can be explained by comparing your body to your car. Both run (51) fuel, food for your body and gasoline for your car. Both (52) that fuel, first into heat, then energy, some of (53) is used to do work, and some emitted as waste. And (54) your car uses more energy when the engine is racing than when it is idling, (55) does your body use more energy when you are working hard than (56) you are resting.

For the purpose of this comparison, (57) , there is one significant difference between them. Your car cannot store fuel by turning it into (58) else; all gasoline not (59) remains as gasoline. But your body stores (60) energy as fat. When the gas tank is completely empty, the car won’t run; but your body can burn fat to provide more energy.

56().

A.that 

B.since 

C.when 

D.where
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