单项选择题

A．position
B．association
C．contract
D．contacts.
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单项选择题
What does the woman suggest the man do？
A．Come early the next day.
B．Photocopy the articles he needs.
C．Ask professor Gillis for a copy of the articles.
D．Wait until the girl finishes with her articles.
单项选择题
Why is the tank test carried under water
A．Because the water pressure is greater than air pressure.
B．Because the first comets crashed in the water.
C．Because there is less damage when the explosion takes place under water.
D．Because it is the only way available for engineers to find out which part has cracked.
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