联合国在当代国际社会中起着什么作用？

The fact _____ Mary was late for the meeting again made me angry.

A、that

B、why

C、what

D、which

教案设计　请为幼儿园托（小）班设计一份“我爱幼儿园”的教育活动教案。

Three days later, word came _____ our country had sent up another man-made satellite.

A、when

B、which

C、that

D、where

如果一张光盘的存储容量为650MB，那么这张光盘可以存储（）个字节的信息。

A、650

B、650×1024

C、650×1024×1024

D、650×1024×1024×1024

The company has decided to sponsor the exhibition, _____ helps to promote its image.

A、that

B、who

C、what

D、which