题目

句型转换（填入适当的词） （1） Mary advised me to buy that hat.Mary methat hat. （2） She likes country music very much.She country music. （3） He didn't go to bed until his wife came back. his wife came back he to bed. （4） I determined to leave at once.I to leave at once. （5） Rather than go home by bus with so many people, he always prefers to ride a bike.He prefers a bike to by bus with so many people.如图是学生设计的模拟调光台灯电路．闭合开关灯泡发光后，无论如何移动回形针，发现灯泡亮度几乎不变，产生这一现象的原因可能是（ ）A．灯泡被短路B．铅笔芯的总阻值太小C．灯泡灯丝的阻值太小D．电源被断路