单项选择题

Hydrogeology is the study of water and its properties, including its ______and movement in and through land areas.

A．flow
B．absorption
C．distribution
D．evaporation
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单项选择题
Next week you’ d better bring all your questions here. We’ re going to have a question and-answer______.
A．section
B．service
C．session
D．course
单项选择题
The picnic______ at last after being twice postponed.
A．came off
B．came up
C．put on
D．went on
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