单项选择题

Floors and walls must be specially constructed to make a building soundproof.

A．solid and sturdy
B．officially complete
C．impermeable to noise.
D．architecturally attractive
<上一题 目录 下一题>
热门 试题

单项选择题
Proper clothes ______ for much in business. That's why you see most business People dress formally.
A．count
B．account
C．allow
D．care
单项选择题
We must try to ______ the best of our moral values for our children and grand-children.
A．replace
B．remain
C．generate
D．preserve
相关试题