According to Hoxby, the charter schools succeed partly because______.
A.their reputations tend to attract many excellent students
B.the teaching methods stimulate students' enthusiasm of study
C.the salary mechanism mobilizes the teachers' teaching initiative
D.the poor family backgrounds make the students work energetically
第4题
抢救人员必须佩带空气呼吸器进行抢救,在煤气区域 ()说话。
A、禁止摘下面罩
B、可以摘下面罩
C 、打手势
第6题
抢救人员必须佩带空气呼吸器进行抢救,在煤气区域()说话。
A.可以摘下面罩
B.禁止摘下面罩
C.打手势
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