They took more practice tests and were much more likely to attend free coaching sessions.
他们做更多的练习题，并且更有可能去参加免费辅导班。
Overall, the group that took practice tests did three times better than the study-only group.
总体来讲，经常做测试的那一组的考试结果要比不做测试的那一组好出三倍。
Mom: you have some practice tests in your book, right?
妈妈：你书里有些模拟考试，对不对？
Mom: you have some practice tests in your book, right?
妈妈：你书里有些模拟考试，对不对？
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