世界因 而精彩。 [ ] A．人 B．植物 C．生命 D．微生物

He is the most suitable person _______the task.

A．to finish

B．finishes

C．finished

D．finishing

----What do you think of the Chinese language today?

---- Quite popular. It __________ an important role in communicating with other countries. More and more foreign friends are learning Chinese.

A．plays

B．played

C．has played

D．will play

写出反应的化学方程式并判断反应类型：镁在空气中燃烧 ____________ ，_______

简述在FOXPRO命令“DISPALL姓名，学号，总评成绩FOR‘性别’=‘男’．AND．学号<’10’”的结果。

在简易覆盖栽培中，无纺布覆盖的特点有（）。

A.保温

B.保湿

C.透光

D.透气

E.吸湿