单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．The summer has been unusually hot.
B．The man’s air conditioner is broken.
C．The man hasn’t used his air conditioner.
D．The man doesn’t have air conditioning.
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单项选择题
A．By selling services that make life comfortable.B．By selling land containing oil.C．By selling public lands.D．By selling coal and other natural products.
A．By selling services that make life comfortable.
B．By selling land containing oil.
C．By selling public lands.
D．By selling coal and other natural products.
填空题
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