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.

1. have to know a great deal more than now about the social and economic
2. have to know a great deal more than they do now about the social and economical
3. would have to know a great deal more than they do now about the social and economical
4. would have to know a great deal more than they do now about the social and economic
5. would have to know a great deal more than now about the social and economical

答案选的是e，好像不太对吧，和social 并列的应该是economic，怎么会是economical呢？所以偶认为答案应该是d吧

(A) it is so debilitating that it has become an economic

(B) it is of such debilitation, it has become an economical

(C) so debilitating is it as to become an economic

(D) such is its debilitation, it becomes an economical（A）

(E) there is so much debilitation that it has become an economical

ETS给的解释很清楚Finally, B, D, and E wrongly use economical instead of economic to mean “pertaining to the economy

大全－832 The supply of oil being finite has become an economical and political consideration of the first magnitude for all modern industrial nations.

(A) The supply of oil being finite has become an economical

(B) The finite supply of oil has become an economical

(C) That the supply of oil is finite has become an economical

(D) The supply of oil being finite has become an economic（E）

(E) That the supply of oil is finite has become an economic

从这2题看来这边的答案应该是D。