The air inside a house or office building often has higher concen_英语解答

The air inside a house or office building often has higher concentrations of contaminants .heavily polluted outside air.
A.than does
B.more
C.as some that are
D.like of A
为什么选A?

人气：425 ℃　时间：2020-01-30 02:14:27

解答

意思是：房屋或办公大楼内的空气总是比室外已经严重污染的空气有着跟高的空气污染物含量.
more/-er...than...的比较句式想必你应该知道的,does放在这里是倒装,因为前面的主语“室内空气”的动词是"has",所以than后面的主语“室外空气”动词倒装用的是does咯^^