GWD1-Q32:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
A.have to know a great deal more than now about the social and economic
B.have to know a great deal more than they do now about the social and economical
C.would have to know a great deal more than they do now about the social and economical
D.would have to know a great deal more than they do now about the social and economic
E.would have to know a great deal more than now about the social and economical 比如这道题,OG里也有,比较对象到底是什么??? 还有什么叫状语比较?能举个例子么?
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