English level is must 有一定的英文水平 At least 3-year working experience on technical service / support. 至少3年从事维修或技术支持的工作经验 .
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Word is the foundation of learning English so you must start from word(I don't know your level)but I don't encourage you to learn by rote.
单词是学习英语的基本功，所以你必须从单词开始（当然这要视你的水平而定），但是我也不建议…
So that is a hard thing for international students to do well. Their English level must be very very good.
所以留学生是很难得到高分的，他的英语水平必须非常好。
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