1 . ______（devote）to bringing up the secret of nature, the young scientist has little time for entertainment. (所给词的适当形式填空)

2 . Professor Black has been working in the forest for years, ________ (devote) to the research of wild plants and animals. (所给词的适当形式填空)

3 . Scientific research shows that when we ________ stress, in whatever form, we react both chemically and physically.

A．are exposed to

B．are devoted to

C．are addicted to

D．are adjusted to

4 . 根据汉语提示写出英语对应的短语
1 至关重要     1                          
2 使自己适应……       2    
3 提醒某人某事     3                        
4 有助于；为……做贡献    4    
5 接通电话；通过    5                     
6 出故障；不整齐    6    
7 献身于……；专心致志于……    7           
8 充分利用     8    
9 处于下降，衰退中     9    
10 进入，到达，踏上       10    

5 . When he was young, he used to __________ hard at his lessons.

A．devote to working	B．devote himself to work
C．be devoted to work	D．be devoted to working