来自付庄的问题
Theairinsideahouseorofficebuildingoftenhashigherconcentrationsofcontaminants.heavilypollutedoutsideair.A.thandoesB.moreC.assomethatareD.likeofA为什么选A?
Theairinsideahouseorofficebuildingoftenhashigherconcentrationsofcontaminants.heavilypollutedoutsideair.
A.thandoes
B.more
C.assomethatare
D.likeofA
为什么选A?
1回答
2020-03-04 08:33