【单选题】听力原文: The Canadian police say that the new North American Free Trade Agreement which is to open frontiers across the continent has been exploited by drug smugglers from South America. The mafia can no...
【单选题】听力原文:The Canadian police said the New North American Free Trade Agreement which is to open frontiers across the continent has been exploded by drugs smugglers from South America. The Mafia can now mov...