Question

Helen is 15 years old, and Joan is 15, too. So Helen is ____ Joan.

A．as big as

B．as older as

C．as old as

D．so old as

Answer 1

C

试题分析：句意：海伦15岁，琼也15岁，所以海伦和琼一样大。As+形容词原级+as表示“和……一样……”, as old as （年龄）一样大。Big用来形容体积大小，结合题意故选C。