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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
排除了DE。D谈及amount感觉是带有量词的，而数字没有量词。B选项的as many好突兀。既然大案给的是B，那就记住吧。就算记不住，以后再错，应该也不觉得冤枉，怎么看怎么不像是正确答案，和已有的知识构成距离太远了。
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