分散在大气中的微小液滴是气态污染物。()
参考答案:错
My partner wants to keep the company small _____ I’d like to expand it.
A.and
B.or
C.however
D.while
大致了解患儿视力情况的检查是()
A.注视反射
B.跟随反射
C.优先观看法
D.视觉诱发电位
E.光感测定