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