我国某山区发现有甲状腺肿的病例，卫生学调查发现当地居民的尿碘含量为20μg/d，居民摄碘量为30μg/d。

如果是病区，应该采取的预防措施是（）。

A.饮水中加碘

B.食盐中加碘

C.口服碘剂

D.食用含碘食品

E.注射碘化油

There were a lot of people in the park. We had _____ to take a rest, so we got very tired.   [ ]

A. everywhere      

B. somewhere    

C. nowhere        

D. anywhere