17.The room is about__in diameter as the hall.a:one-third as large b:as one-third large

题目

17.The room is about__in diameter as the hall.a:one-third as large b:as one-third large
c:as large one-third d:one-third large as

答案

此题选择A项

此处构成的是as...as结构
考察倍数表达法 ：
倍数+ as + 形容词或副词的原级+as

翻译：这个房间在直径上是大厅的三分之一.

one-third 表示的是三分之一