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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
there are fewer than one-quarter as many，这里并不是than和as出现在一个比较里，as many在这里是固定词组，表示同样数量的，如：twice as many, one-quarter as many，We visited five countries in as many days。
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