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题库 / Prep2008E2-SC-185
When drive-ins were at the height of their popularity in the late 1950s, some 4,000 existed in the United States, but today there are less than one-quarter that many.
there are less than one-quarter that many
there are fewer than one-quarter as many
there are fewer than one-quarter of that amount
the number is less than one-quarter the amount
it is less than one-quarter of that amount
请看讲解视频
A. there are和less than的不可数矛盾，并且drive-ins应该是可数的
B. right! fewer than one-quarter as many就像twice as many表示同样数量的
C. that amount是单数名词，the amounts是复数，并且amount后面跟不可数名词，不能跟drive-ins这种可数名词。
D. 同C，the amount后面跟不可数名词，不能跟drive-ins。the number和the amount指代不明，但主要还是the amount不能接可数名词的问题
E. 同C，并且it看起来应该指代the number of drive-ins，但是其在前文没有出现不能用it指代
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