问题
选择题
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
答案：D
题目分析：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。