When drive-ins were at the height of their popularity in the late 1950’s, some 4,000 existed in the United States, but today there are less than one-quarter that many.
A. there are less than one-quarter that many--> less for uncountable. Incorrect. B. there are fewer than one-quarter as many--> one-quater of...-> unidiomatic. C. there are fewer than one-quarter of that amount D. the number is less than one-quarter the amount--> Less for uncountable. Incorrect. E. it is less than one-quarter of that amount ---> Less for uncontable. Incorrect
C选项是there are fewer (drive-ins) than one-quarter of that amount。drive-ins不能和amount进行比较,所以C错。这里省略的词不可能是不可数名词,因为一是使用了fewer(而不是less),二是there are结构中使用了复数的are。 D选项中,the number和amount都表示数量,所以可以进行比较;而且number表示数量的时候是不可数名词,用less进行修饰,D没问题 E中的it指代drive-ins单复数上出错