请查询成绩>85分的学生的姓名；
Select * from student where id in (select id from achievement where mark>85);
最后，本文以短信查询成绩为例具体介绍了短信平台的实现。
Finally, it makes searching grade with short message as example introduce achievement of platform.
申请寄送额外成绩单的考生可以在网上查询成绩单是否已经寄出。
Candidates who have requested us to send extra Test Report Forms can check on-line whether they have been sent out.
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