It was proved that the problem __ partly in the air pollution.
A.lies
B.lied
C.lay
D.laid
答案:C
以下不是食物中毒调查目的的是()。
A.确定食物中毒的类型和中毒原因
B.查清引起中毒的食品和导致食物中毒的途径
C.为中毒患者的处理,食品处理和现场处理提供科学依据
D.总结经验教训,以利加强食物中毒的预防
E.查清责任者并进行法律责任处理
You should make your clothes _ . [ ]
A. be cleaned
B. to be cleaned
C. clean
D. cleaned