阅读理解。

 Mary 09:45:10

     Hi, Jim. Nice to meet you!

     I'm a girl. My name is Mary Green. My favorite (最喜爱的) color is red. My telephone number is

 873-3516.

 Jim 09:46:05

     Hi, Mary. Nice to meet you, too!

     I'm a boy. My name's Jim Hand. My favorite color is blue. And my telephone number is 894-2015.

1. Mary likes _____.

    A. red    

    B. blue

    C. green

2. The girl's last name is _____.

    A. Green              

    B. Hand  

    C. Blue

3. The boy's first name is _____.

    A. Mary  

    B. Jim        

    C. Hand

4. Jim's telephone number is _____.

    A. 894-3516.

    B. 873-3516

    C. 894-2015

5. They are on line (在网上）_____.

    A. in the morning

    B. in the afternoon  

    C. in the evening

单位切削力的大小，主要决定于（）。

A.车刀角度

B.被加工材料强度

C.走刀量

D.吃刀深度