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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) one quarter加后面的部分应该是一个可数项，而less修饰不可数名词，且用less的话，前面要用there is，故用less错误；that many的表达unidiomatic。
(B) Correcet；补全省略即there are fewer than one-quarter as many (as there were in the late 1950s)； fewer修饰可数名词正确；
(C) amount修饰不可数名词，不能用来修饰4,000（drive-ins）这个可数的量。
(D) the number指代不清；the amount指代不清，只能修饰不可数名词；the number is less没有问题，less和smaller都可以修饰数字。
(E) it没有指代对象，that amount指代4,000 drive-ins错。
太厉害了！！！问一下b选项为什么后面全都可以省略啊。。。看着结尾as many 我都直接排除这选项了 真的头大
好清楚！借用了
B补全省略即 there are fewer than one-quarter as many (as there were in the late 1950s)
few修饰可数名词，less修饰不可数
amount修饰不可数
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