单项选择题

______ with steam engines, turbines have much higher efficiency.

A．Compared
B．While comparing
C．Compare
D．Comparing
<上一题 目录 下一题>
热门 试题

单项选择题
A．passionB．preferenceC．performanceD．potential
A．passion
B．preference
C．performance
D．potential
单项选择题
Cancer is second only ______ heart disease as a cause of death in the world.
A．to
B．with
C．from
D．of
相关试题