单项选择题

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

A．Mary should select another course instead.
B．Someone has broken down the elective system.
C．Mary should check out once more right now.
D．Mary still has a chance to register the class this semester.
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单项选择题
A．He fell ill and passed away unexpectedly.B．He died in a traffic accident.C．He was ill for a certain period of time and then passed away.D．He passed away when he was working.
A．He fell ill and passed away unexpectedly.
B．He died in a traffic accident.
C．He was ill for a certain period of time and then passed away.
D．He passed away when he was working.
单项选择题
A．The total growth rate of world population will increase.B．The growth rate of population in richer countries will increase.C．The growth rate of population in poor countries will increase.D．The total growth rate in American countries will increase.
A．The total growth rate of world population will increase.
B．The growth rate of population in richer countries will increase.
C．The growth rate of population in poor countries will increase.
D．The total growth rate in American countries will increase.
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