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单项选择题

A．Average tuition costs increased by 9 percent.
B．Average tuition costs increased by 15 percent.
C．Average tuition costs increased by 90 percent
D．Average tuition costs increased by 150 percent.
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单项选择题A．Because many people don’t know how to behave in social situation.B．Because most people are shy by nature.C．Nobody will laugh at you for being shy.D．Shyness is difficult to overcome.

A．Because many people don’t know how to behave in social situation.
B．Because most people are shy by nature.
C．Nobody will laugh at you for being shy.
D．Shyness is difficult to overcome.

单项选择题A．He is going to spend a holiday in London.B．He is going to have a business trip to London.C．He will go to London with the woman.D．He is going to move to London.

A．He is going to spend a holiday in London.
B．He is going to have a business trip to London.
C．He will go to London with the woman.
D．He is going to move to London.