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问题 选择题

下列事例中，属于光的反射现象的是（　　）

A．阳光下人的影子

B．人在河边看到水中游动的鱼

C．人在湖边看到自己在水中的倒影

D．插在水中的筷子看上去好象折断了

答案

A、影子的成因是光的直线传播．不符合题意．

B、人在河边看到水中游动的鱼，属于光的折射现象．不符合题意．

C、水面的倒影是因为平静的水面就像一面镜子，树在水中由于光的折射，是平面镜成像，属于一种光的反射现象．符合题意．

D、斜插入水中的筷子看起来向上弯折，是由于光线从水中斜射入空气中时发生了折射．不符合题意．

故选C．

阅读理解

阅读理解。

     Mary is a girl.  She is a middle school student.  She is in Class Three, Grade Two.

     There is a big picture in Mary's bedroom It's the picture of the family.  Mary's mother is a teacher of

 Chinese.  There is a nice pen in the pocket of her white coat.  Mary's father is a worker.   There is a big

 red flower on his black coat.  He is at work from Tuesday to Sunday. Mary's brother is near her

 mother.  He is a middle school student, too.  He is fourteen.  He is in Grade Three. 

     Mary and her brother like books.  They like school.  They work hard). They are good students.

1.  This is a picture of _____.

    A.  Mary                          

    B.  Mary's family 

    C.  Mary's father                

    D.  a middle school

2.  Mary is _____.

    A.  fourteen                       

    B.  eleven

    C.  thirteen                      

    D.  fifteen

3.  Mary's father and mother are_____.

    A.  worker and teacher          

    B.  worker and nurse

    C.  teacher and doctor

    D.  doctor and nurse

4. There is a red flower on _____ coat .

    A.  Mary's

    B.  Mary's brother's

    C.  Mary's brother's

    D.  Mary's father's

5. _____ on Monday.

    A.  They four are all at home

    B.  Mary and her brother go to school

    C.  Only Mary's father is at home

    D.  Mary's mother and father are not at work
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选择题

— _____ is your coat?      

— The black one. [ ]

A. What

B. Where

C. Which

D. How

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