As was expected, only five people turned up at the party, __________ disappointed the hostess very much.

A．which

B．that

C．who

D．where

“多难兴邦”贵在“兴”。“多难兴邦”就要自强不息。这是因为（    ）

A．矛盾双方的对立是有条件的

B．矛盾双方的同一是无条件的

C．矛盾双方的转化是有条件的

D．矛盾双方的对立和统一是不可分的