Who was the first visitor？
A policeman.
B. The thief.
C. The bookseller.
查看答案
The author thinks that revising starts when ______.
A. you want to show what you know
B. you think about your audience
C. you have discovered your idea
D. you have developed an overall writing plan
The school has been______as the meeting place for the evening art club.
A. designed
B. designated
C. diverted
D. diagnosed
She didn't openly attack the plan, but her opposition was______in her failure to say anything in support of it
A. explicit
B. implicit
C. internal
D. immortal
Why can the hummingbird can hover and even fly backwards？
A. Because its wings are large enough.
Because it can tilt its body.
C. Because it has whirling and horizontal blades like a helicopter.
D. Because it can produce down-draft of air by beating their wings very fast
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