题目

张燕同学连接的电路如图所示,她使用的电源是12 V的蓄电池,当她闭合开关后,电压表的示数为4 V,关于电动机两端的电压,下列说法中正确的是:  A、4 V;               B、8 V;              C、12 V;            D、16 V. 答案:B Some seemingly harmless blogs might become harmful when ________ on the Internet by millions of people. [  ] A.to read B.reading C.read D.being read
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