直流电缆使用线色区分时，红色对应电源正极，（）色或黑色对应电源负极。

Look at the picture. It’s a nice    1   . In the picture you can see a teacher’s     2  on his desk. It’s a Chinese book. There are fifty desks and fifty chairs in the room. There is also a big blackboard. You can see a girl and    3   boys.
The girl’s    4   is Julia. She is thirteen. The boy with the football is Tom. He likes playing    5  . The other boy is Tony. They    6   the same coats and they are the same age. They look the same. I    7   they are twins. Tom is a    8   boy. A book is in his hand. You    9   see the teacher.   10   is the teacher? He is taking the picture.

小题1:	A．house B．station C．classroom D．shop

小题2:	A．backpack B．basketball C．book D．hat

小题3:	A．one B．two C．three D．four

小题4:	A．name B．age C．brother D．notebook

小题5:	A．basketball B．chess C．football D．cards

小题6:	A．are B．wear C．lose D．is

小题7:	A．think B．see C．look D．meet

小题8:	A．dear B．first C．lost D．good

小题9:	A．aren’t B．can’t C．doesn’t D．be not

小题10:

A．What B．How C．Where D．When