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问题 不定项选择

如图所示，物体静止于水平桌面上，则

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A．桌面对物体的支持力的大小等于物体的重力，这两个力是一对平衡力

B．物体所受的重力和桌面对它的支持力是一对作用力与反作用力

C．物体对桌面的压力就是物体的重力，这两个力是同一种力

D．物体对桌面的压力和桌面对物体的支持力是一对平衡的力

答案

答案：A

阅读理解
阅读理解。
                      2
    There's a terrible green monster 
    Who lives under my bed.
    I hear his long white teeth click.
    He's waiting to be fed.
    I shiver (发抖) under my sheets (床单)  
    And close my eyes up tight.
    Maybe if I lie real still
    He won't eat me up tonight
    He taps (轻拍) me on the shoulder.
    I don't know what to do.
    He looks at me and says,
   "I'm scared! Can I get in with you?"
                 3
      Ticktock goes the clock.
      Bowwow says the dog.
      Quack says the duck.
      Croak croak says the frog.
                   4
      Nothing is easy.
      Even life will be harder …
      If you just give up!
1. We can infer (推断) that the child in poem 2 is _____.
A. brave
B. honest
C. scared
D. cold
2. The third poem is written for _____.
A. kids
B. adults
C. teens
D. animals
3. The fourth poem is a kind of _____.
A. Limerick
B. Nature poem
C. five-line poem
D. Haiku
4.  Poem 2 is mainly about _____.
A. home
B. night
C. sleeping
D. bed
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我国运动员获得的第一块奥运金牌产生于

A．射击项目

B．乒乓球项目

C．跳水项目

D．排球项目
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