用“who”或“that”填空。  

1. The man ________ is talking with my mother is my father

2. That book is the one _______ I bought yesterday .  

3. He is one of the workers ________ been saved in that accident .  

4. They talked of the things and persons ________ they remembered in the

factory .  

5. All ______ can be done must be done .

人类审视自己的社会经济行为和历程，认为可取的发展模式是(    )

A．先污染后治理

B．高消耗.单纯追求经济增长数量

C．边污染边治理

D．环境与发展相协调的可持续发展