单项选择题

What is main idea of this passage

A．Advertisement.
B．The benefits of advertisement.
C．Advertisers perform a useful service to communities.
D．The costs of advertisement.
<上一题 目录 下一题>
热门 试题

单项选择题
They overcame all the difficulties and completed the project two months ahead of time, ______ is something we had not expected.
A．which
B．it
C．that
D．what
单项选择题
A teacher ______ knowledge.
A．teaches
B．lectures
C．educates
D．imparts
相关试题