教室里有四盏荧光灯，任一盏损坏后，另外三盏正常发光，则荧光灯

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问题选择题

教室里有四盏荧光灯，任一盏损坏后，另外三盏正常发光，则荧光灯间的连接是（　　）

A．并联

B．串联

C．串联或并联

D．无法确定

答案

因四盏荧光灯，任一盏损坏后，另外三盏都能正常发光，所以它们只能并联才能满足题意；

故选A．

听力题

小题1:Do you know the ___________(深)of the river?

小题2:She washed her hands with a bar of ____________(肥皂).

小题3:A ___________ (溺水)man will catch at a straw.

小题4:The sailing boat was delayed by ____________ (逆向的) winds.

小题5:____________(残疾)as he is, he is also a human being with dignity.

小题6: He ____________(承认)that he had made mistakes.

小题7:His wedding was fixed next ______________(星期四)

小题8:I _____________(真诚地)hope that he can accept the criticism of others.

小题9:The design is _____________(形成)with triangles.

小题10:He ___________ (想知道)why people built ugly homes, when they could have beautiful ones.

单项选择题 A1型题

炼制蜂蜜时，老蜜的炼制温度为（）

A.116℃～118℃

B.105℃～110℃

C.119℃～122℃

D.116℃～120℃

E.119℃～120℃