Cattle ____ chiefly _____ grass.A.feed ；on B.feCattle ____ chiefly _____ grass.A.feed ；onB.feeds；onC.give；toD.feeds；for
问题描述：
Cattle ____ chiefly _____ grass.A.feed ；on B.fe
Cattle ____ chiefly _____ grass.
A.feed ；on
B.feeds；on
C.give；to
D.feeds；for
答
题干是说：牛主要是以草为食（靠吃草过活）.feed on:短语,意思是“靠吃什么过活”,cattle一词类似people,是复数.所以此题选A