单项选择题

Many countries have adopted systems of （）education in order to promote the average level of education.

A. constrained
B. compulsory
C. cardinal
D. conventional

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单项选择题
9（）

A.effort
B.try
C.attempt
D.endeavor
单项选择题
After reading these books, the student was （） to the Darwinian theory of evolution.

A. changed
B. converted
C. transferred
D. adjusted
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