单项选择题

He's ______ to know the influence of the phenomenon.

A．perhaps
B．possibly
C．likely
D．certainly
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单项选择题
It is said that this bridge has ______ for more than three centuries.
A．appeared
B．existed
C．risen
D．born
单项选择题
You must ______ the important points the teacher says.
A．note down
B．turn to
C．put on
D．get over
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