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.
- have to know a great deal more than now about the social and economic
- have to know a great deal more than they do now about the social and economical
- would have to know a great deal more than they do now about the social and economical
- would have to know a great deal more than they do now about the social and economic
- would have to know a great deal more than now about the social and economical
GWD1-Q38: Retail sales rose 8/10 of 1 percent in August, intensifying expectations that personal spending in the July-September quarter more than doubled that of the 1.4 percent growth rate in personal spending for the previous quarter.
- that personal spending in the July-September quarter more than doubled that of
- that personal spending in the July-September quarter would more than double
- of personal spending in the July-September quarter, that it more than doubled
- of personal spending in the July-September quarter, more than doubling that of
- of personal spending in the July-September quarter, that it would more than double that of
答案选D,E,不明白这里为什么要用would。什么情况下用?谢谢!!
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