求翻译：　　To begin with, examinations lower the standards of teaching. Since teachers are often judged by examination results, they are reduced to training their students in exam techniques. No subjects can be taught successfully merely through being approached with intent to take examinations. In addition, the most undesirable effect is that examinations encourage bad study habits. As the examination score is the only criterion for his academic performance, a student is driven to memorize mechanically rather than to think creatively.是什么意思？

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