单项选择题

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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.In the 16th century.B.In the 17th century.C.In the 18th century.D.During the Middle-ages.
A.In the 16th century.
B.In the 17th century.
C.In the 18th century.
D.During the Middle-ages.
单项选择题
A.The doctor is operating on her.B.She has had an operation.C.She’ll rest at home for another couple of weeks.D.She returned to college last week.
A.The doctor is operating on her.
B.She has had an operation.
C.She’ll rest at home for another couple of weeks.
D.She returned to college last week.
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