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單項選擇題

The universities that offer doctoral degrees are（）

A.research universities
B.doctoral universities
C.A and B and some specialized institutions
D.Both A and B

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單項選擇題

Higher education in the United States consists of（）types of institutions.

A.four
B.five
C.six
D.seven

單項選擇題

High schools are made up of（）different types of schools with somewhat different tasks.

A.four　
B.three
C.five　
D.None of the above

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