Since rats are destructive and may carry disease, therefore many cities try to exterminate them. 画线部分分别为destructive, may carry, therefore many, exterminate请问哪里错了,WHY.谢谢
再请教一题: ---- inventions such as videos CD Rom and the Internet, it has been difficult for movie theatres to turn a profit since the early 1970s. (A) Since recent (B) Because of recent (C) Recent (D) The result of recent