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问题 填空题

质量为5kg的物体受到的重力大小为______，方向为______．

答案

物体受的重力G=mg=5kg×9.8N/kg=49N．

物体所受的重力是由地球施加的，方向竖直向下．

故答案为：49N；竖直向下．

完形填空
下面是四位同学写给编辑Lee的求助信,请将这四封信与问题进行配对.
A
Dear Editor Lee,
I am a student from a junior middle school. I am good at all the subjects except English. I can’t remember words well. I am especially weak in speaking and listening. What shall I do? Could you give me some advice?
John
                              B
Dear Editor,
I have a problem! I really don’t know what to say when I meet strangers. I find it hard to talk with others because I’m afraid they might laugh at me. I am not as interesting, clever or funny as my friends. If people start talking to me, they will realize that I am just boring. Please help me.
Ann
                             C
Dear Editor Lee,
I was getting on well with my best friends. But a few days ago, another friend of mine told me that she often said bad words about me. When I heard this, I was very angry. What should I do? Should I stop being her friend or stay with her as usual?
Betty
                             D
Dear Editor Lee,
Recently I have much difficulty in falling asleep. When I go to bed, though I feel very sleepy, I always think a lot and can’t fall asleep. So I always feel very tired in class and sometimes my head hurts badly. Could you give me some advice?
Steven
小题1:The student finds it difficult to fall asleep.
小题2:The student doesn’t know what to say to strangers.
小题3:The student doesn’t know how to learn English well.
小题4:The student doesn’t know if she should still stay with her best friend.
小题5:请写出你的一个烦恼：________________________________________
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单项选择题

关于顶推法的特点说法错误的是（）

A.不需要支架和大型机械

B.工程质量容易控制

C.占用场地少

D.受季节影响
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