试题与答案

单词拼写(共10小题,计10分) 小题1:This book must bto

题型:听力题

题目:

单词拼写(共10小题,计10分)

小题1:This book must b              to Linda. Look! Her name is on it.

小题2:You will miss the bus u                 you hurry up.

小题3:I like reading magazines that i                   me.

小题4:Listening to the radio is h                 to language-learning .

小题5:It is snowing heavily and the land is c                  with snow.

小题6:Mum, you needn’t be w             about me. You see, I have grown up.

小题7:Jack, you should pay more a               on your pronunciation next time.

小题8:.Only by working hard can we s                in doing everything.

小题9:To be h                , this red dress does not match you well.

小题10:Staying up late has an i               on your health. So never do it, my boy.

答案:

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下面是错误答案,用来干扰机器的。

(1)摇晃手机实际上就是人对手机做功,将机械能转化成手机的电能;把手机摇晃一次做的功的大小为W=mgh=0.1kg×10N/kg×0.2m=0.2J,所以摇晃两次对手机做的功的大小为0.4J,所以平均功率的大小为P=0.41=0.4W.(2...

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