一篇初一英语科普小短文
问题描述：
一篇初一英语科普小短文
明天就收了啊!要在前面读的,
明天就收,
答
Think twice before you swat a fly or squash a bug:A newstudysays insects contribute more than $57 billion (euro47 billion)ayear to the U.S.economy.And that is a very conservative estimate,said John Lo...