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1·A few required them to pass tests in the eleventh or twelfth grade to get a diploma, but to me, that was like closing the barn door after the cow is out.

有少数几个州要求学生在十一或十二年级时通过考试获得文凭，但在我看来，那等于是在奶牛已经跑出去了再关上牛圈的门——太迟了。

2·In the twelfth grade, we would have a general revision of subjects, which is quite tiring.

在高三，我们要对所有科目进行总复习，这挺累人的。