调查结果还显示，中学生的阅读量比高中生大。
The results also show that middle school students read more books than high schoolers.
他们聘请大学本科生向高中生教授计算机科学，而高中生反过来就这一主题对中学生进行指导。
They engage college undergraduates to teach computer science to high school students, who in turn instruct middle school students on the topic.
中学生和高中生样本中非法服用兴奋剂的比例是百分之四点五。
In a sample of middle- and high school students, the illicit useof stimulant medication was 4.5 percent.
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