Some people think that CD-ROMs will soon be ________

试题详情及答案解析

Some people think that CD-ROMs will soon be _________ books.

A．as more popular as	B．the most popular than
C．so popular as	D．more popular than

答案：D

试题分析：句意：一些人们认为CD-ROMs将不久比书更受欢迎。比较级：A +be+形容词的比较级+than+其他。根据句意，故选D。
考点：考查比较级的用法