GMAT测验综合教诲:词汇教诲(十七) natural number positive number negative number nonnegative rational irrational (number) common ratio direct proportion percent product ... /
2010-06-08 / 查看
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托福(TOEFL)作文测验中常用的套句 下文中出现的A、B、“...”默示某事物的意思,“"sb”是代表 somebody的意思,要在写作中要根据上下文举行得当更换。 一、开头: When it comes to ..., some think ... ... /
2010-06-08 / 查看
117 次