A. Superior. B. Missouri. C. Huron. D. Ontario. 参考答案:B 答案解析:[详细解答] 北美的大湖区包括五个大湖:Superior (苏必利尔),Michigan(密歇根),Huron(休伦),Erie (伊利),Ontario(安大略),它们构成了世界上最大的一片淡水区域
第33题: [单项选择]There isn't sound proof to support his biological theory. A. financing B. publications C. evidence D. appreciation 参考答案:C 答案解析:financing筹集的资金:publication出版物;evidence证据;appreciation鉴赏、感激,重视。因为proof意为“证明,证据”,故选C项。该句中的sound不能理解为“声