标题: 大全section1-18 [打印本页] 作者: ran2010zx 时间: 2011-2-7 00:37 标题: 大全section1-18 To maintain a high demand for theirproduct, the manufacturers first took over the marketing and sales functionspreviously performed by outside agents; next, they began changing theiradvertising campaigns monthly to keep pace with the rapid changes in consumers’lives. (A) they beganchanging (B) this beganchanging (C) the formerbegan changing (D) to beginchanging（A） (E) to change 这里选A的话不会造成they的指代不明么？？？牛人们讲讲啊，谢谢！！作者: kaji29 时间: 2011-2-7 11:16
分号的意思是连接两个有一定关系的句子