单项选择题

A．Because the hot air has to reach a certain temperature.
B．Because the house is very big.
C．Because termites try to escape by hiding in wooden beams.
D．Because termites may survive for a full six hours.
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单项选择题
A．Become a member of the Committee for the Exchange of Foreign Students.B．Find the organization sponsoring him.C．Learn how to get accustomed to the life in the United States.D．Stay in a foreign country for six months.
A．Become a member of the Committee for the Exchange of Foreign Students.
B．Find the organization sponsoring him.
C．Learn how to get accustomed to the life in the United States.
D．Stay in a foreign country for six months.
单项选择题
A．Counting sheep.B．Taking :sleeping pills.C．Drinking coffee.D．Drinking milk.
A．Counting sheep.
B．Taking :sleeping pills.
C．Drinking coffee.
D．Drinking milk.
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