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【单选题】
Tom is young but he ____ fly a kite by himself.A.
can
B.
may
C.
need
D.
must
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举一反三
【单选题】关于平面上的点和线说法错误的是()。
A.
若点位于平面内的一条直线上，则点必在平面上。
B.
若一点在平面上，则一定定在平面上的任意一条直线上。
C.
若直线通过平面上两点，则直线必在平面上。
D.
若直线在平面上，则该直线一定平行于平面内无数条直线。
【单选题】Then professor walked onto the platform and seated himself in a chair, ______ for answering questions.
A.
had prepared
B.
being prepared
C.
preparing
D.
prepared
【单选题】The professor walked into the classroom and he carried a bag of books with him.
A.
The professor walked into the classroom,carrying a bag of books with him.
B.
The professor walked into the classroom ,carried a bag of books with him.
C.
The professor walked into the classroom to carry a bag of books with him.
D.
The professor walked into the classroom, carry a bag of books with him.
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