单项选择题

The chances of discovering life on Neptune are about a million______.

A．at one
B．for one
C．to one
D．against one
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单项选择题
You will never guess whom I ______ on the street yesterday.
A．ran over
B．ran out of
C．mn into
D．ran up to
单项选择题
Because of the poor harvest, wheat prices have ______ in the last six months.
A．added
B．jumped
C．amounted
D．developed
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