#（美音版）新概念英语第四册:Lesson 8 Trading standards 搜索结果
Lesson8Tradingstandards 贸易标准 Firstlistenandthenanswerthefollowingquestion. 听录音，然后回答以下问题。 Whatmakestradingbetweenrichcountriesdifficult? ChickensslaughteredintheUnitedStates,claimofficialsinBruss
