阅读理解。

     This is Mike's bedroom. You can see a desk and a bed in the room. On the desk, there is a backpack

  and three books. One is a Chinese book, the other two are English books. There is a clock on the desk,

  too. You can see a baseball under the desk. On the bed there is a box. Can you guess (猜) what's in the

  box? Ah, it's a new computer game. It's the present (礼物) for Mike's seventh (第七) birthday.

1. Whose (谁的) room is this?

    A. May's.      

    B. Mike's.    

    C. Simon's    

    D. Mark's

2. How many (多少) Chinese books are there on the desk?

    A. One        

    B. Two      

    C. Three    

    D. Four

3. What's that under the desk?

    A. A clock      

    B. A bed    

    C. A baseball  

    D. A notebook

4. What can't (不能) you see on the desk? 

    A. Book        

    B. Backpack    

    C. Computer  

    D. Clock

5. How old is Mike?

    A. 4            

    B. 5          

    C. 6        

    D. 7

把两种不同的金属片插入柠檬，制成“水果电池”．用电压表测量水果电池的电压，如图所示．下列说法错误的是：

A．水果电池把内能转化为电能　

B．水果电池把化学能转化为电能　

C．金属片A是水果电池的正极　

D．此时电流从电压表的正接线柱流入，负接线柱流出