单项选择题

______ with steam engines, turbines have much higher efficiency.

A．Compared
B．While comparing
C．Compare
D．Comparing
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单项选择题
Which kind of man is NOT to Donna’s liking
A．Emotional.
B．Stubborn.
C．Self-controlled.
D．Muscular.
单项选择题
During his senior year, no graduate school would accept Rod because of ______.
A．the unfinished questions in his exams
B．his slowness in answering questions
C．his slowness and his low marks
D．his stupidity
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