气团主要指（）水平分布比较均匀的大范围的空气团。
A.气压
B.风
C.温度
D.湿度
参考答案：C, D
Read and choose.选出适当的单词补全句子。（只填序号）
1. I have a ____.
2. This is a ____.
3.There are forty ____ on the farm.
4. This ____ is white.
I saw him ______ the game on the computer yesterday evening.
A．played
B．playing
C．play
D．to play
on the farm. 
is white.