试题与答案

两个相同的金属小球,带电荷量之比为1:7,相距为r,两者相互接触后再放回原来的位

题型:选择题

题目:

两个相同的金属小球,带电荷量之比为1:7,相距为r,两者相互接触后再放回原来的位置上,则它们间的库仑力可能为原来的(    )

A.

B.

C.

D.

答案:

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题型:阅读理解

阅读理解。

 Dear Tommy ,

     Thanks for your family photo. Here is a photo of my room.

     Look at the photo. My room is not very big. A bed, a desk, a chair, a bookcase are in my room. My

 bed is near the window (在窗户边). The desk is next to the bed and it's white. The chair is near the

 desk.  The bookcase is beside (在……旁边) the desk and it's white, too.  An English dictionary and a

 Chinese dictionary are on the bookcase. My math, English and Chinese books are on the desk. The

 computer is on the desk, too.  My pencil case is in the backpack.  My pens, pencils and rulers are

 in the pencil case. My backpack is on the chair. Some green plants are on the floor. My baseball is under

  the bed. But you can't see my jacket in the photo.

                                                                                                                               Yours ,

                                                                                                                                 Sally

1. This is a photo of _____.

    A. Tommy's family  

    B. Sally's family    

    C. Tommy's room    

    D. Sally's room

2. The bookcase is _____.

    A. white        

    B. yellow          

    C. beside the plant  

    D. beside the bed

3. You can't see _____ in the photo.

    A. any plants        

    B. a baseball        

    C. any books    

    D. a jacket

4. The backpack is _____.

    A. on the chair    

    B. on  the floor      

    C. on the desk    

    D. under the bed

5. Which of the following is NOT right?

    A. Two dictionaries are in the backpack.

    B. The pencil case is in the backpack.

    C. The baseball is under the bed.

    D. The computer is on the desk.

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