标题: 一道语法题(求助) [打印本页] 作者: wangxiwei 时间: 2010-3-20 12:12 标题: 一道语法题(求助) 例P278 147 Dr.Tonegawa won the Noble Prize for discovering how the body can constantly change its genes to fashion a seeming unlimited number of antibodies,each specifically targeted at an invading microbe or foreign substance. (A) seeming unlimited number of antibodies, each specifically targeted at (B) seeming unlimited number of antibodies, each targeted specifically to (C) seeming unlimited number of antibodies, all specifically targeted at (D) seeming unlimited number of antibodies, all of them targeted specifically to (E) seeming unlimited number of antibodies, each targeted specifically at