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ho HS, Kang S, Lee YH (2001) Agrobacterium tumefaciens-mediated transformation o...

she is of medium bulid 和 she is of medium bbuild 的区别在哪里she is of medium height 和...

__ UFO. [ ]A. a; an B. an; anC. a; an D. an; a 题型：单选题难度：偏易来源：江苏期中题D考点：考点名称：不定冠词（...

e city's major problems.犯罪和非法毒品买卖是这个城市面临的主要问题.include v.包括,包含,把……列入.The conferen...