----I heard that as many as 24 people were killed in the big fire.

----Yes,        news came as          surprise to us.

A．a; a

B．the; /

C．/; a

D．the; a

该图表示的是某些人类活动所导致的环境问题，将以下内容的字母代号按因果关系的顺序填在图内框中：（10分）

→、滥伐森林，滥垦草原    

B、酸雨    

C、过量开采非可再生资源

D、环境问题    

E、水土流失             

F、资源的不合理利用

G、盲目扩大耕地面积

H、大量燃烧煤和石油等    

I、温室效应                   

J、土地荒漠化