单项选择题

The air inside a house on office building often has more contaminants ______ the heavily polluted air outside.

A．than does
B．as
C．as some that are
D．than that of
<上一题 目录 下一题>
热门 试题

单项选择题
The book is ______ boring; it is, in fact, rather exciting and fascinating.
A．anything but
B．nothing but
C．no more
D．all but
单项选择题
Mrs. Smith went on a diet and in two months ______ her weight to 110 pounds.
A．brought out
B．brought off
C．brought down
D．brought up
相关试题