— Kangkang, can you see a few people _____ Chinese kung fu over there?
— Oh, yes. They're cool!
A:are performing
B:perform
C:to perform
D:performing
我们这样一个人口众多的发展中的社会主义大国,任何时候都不能依靠别人搞建设,必须始终依靠的根本基点是( )
(说明:A等级:135分﹣150分 B等级:120分﹣135分,C等级:90分﹣120分,D等级:0分﹣90分)