应用甲醛熏蒸，达到灭菌要求需用（） A.1小时 B.2～3小时 C.4～5小时 D.

__ a small farm in Mexico, there are no schools. A bus is the __. The driver of the bus is the teacher. It’s a school bus, but it doesn’t __ the children to school. It just goes round from place to place ,and sometimes it comes to this farm. The bus will stay here __ three months. The farmers call it a school on wheels(轮子）.
Every time when the bus comes, the farmers will come running to it, __ and laughing. They warmly welcome the school bus.
When the bus is on the farm, in the morning, the teacher ___ the small children. In the afternoon, the bigger __ come to have __ lessons because they must__ in the morning.
At night, the __ come to school .They want to learn ,too.How the farmers hope that some day they can have a real school on their farm!

小题1:	A．At B．In C．On D．For

小题2:	A．home B．shool C．office D．playground

小题3:	A．take B．takes C．taking D．to take

小题4:	A．In B．At C．for D．to

小题5:	A．shouting B．to shout C．shouts D．shouted

小题6:	A．teaches B．teacher C．to teach D．taught

小题7:	A．childs B．children C．childes D．child

小题8:	A．Them B．they C．their D．he

小题9:	A．work B．worker C．working D．Works

小题10:

A．father’s and mother’s B．fathers’ and mothers’ C．fathers and mothers D．father and mother