Question

【题目】The food safety has become one of the problems in our daily life.

A. more expensive B. more important

C. most expensive D. most important

Answer 1

【答案】D

【解析】

试题分析：句意：食品安全已经成为我们日常生活中的最重要的问题之一。由one of可知该用最高级，所以选D。