Question

Do you know the earth is_______ the moon?

A. as 49 times big as    B. 49 times as bigger as

C. 49 times as big as    D. as big as 49

Answer

C

【解析】句意：你知道地球是月球的49倍大吗？固定用法： 倍数+as +adj. +as：…是…的多少倍，as…as中间用形容词或副词原级；故选C。

点睛：倍数有三种表达法（例如，A是B的三倍）：⑴A is three times bigger than B；⑵A is three times the size of B；⑶A is three times as big as B。