单项选择题

A good scientist ______ into all aspects era problem in order to find solutions.

A．pricks
B．pokes
C．probes
D．peers
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单项选择题
When he applied for a ______ in the office of the local newspaper he was told to see the manager.
A．location
B．profession
C．career
D．position
单项选择题
The little boy ______ his father by begging over and over to go to the zoo.
A．plagued
B．preyed on
C．prevailed upon
D．raided
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