单项选择题

A．To plan ways to prevent hearing damage.
B．To inform them about contagious ear infections.
C．To explain part of the physical exam entering students must have.
D．To provide background information for their course work.
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单项选择题
A．Advantages of the North in the Civil War.B．Civilian opposition to the Civil War.C．Reasons to justify fighting the Civil War.D．Military strategy used in the Civil War.
A．Advantages of the North in the Civil War.
B．Civilian opposition to the Civil War.
C．Reasons to justify fighting the Civil War.
D．Military strategy used in the Civil War.
单项选择题
A．Cell phones are more convenient when they are smaller.B．He should change his thinking and understand that smaller phones are better.C．He should accept the fashion.D．Cell phones are not worth buying these days.
A．Cell phones are more convenient when they are smaller.
B．He should change his thinking and understand that smaller phones are better.
C．He should accept the fashion.
D．Cell phones are not worth buying these days.
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