— What ______ the noise, Bill? — Sorry, I broke my glass. A. is B. was C. has been D. will be 答案:B读下图,①②③④表示我国四大地理区域,完成36-37题: 36.区域②最主要的自然环境特征是: A.高寒 B.干旱 C.温暖 D.湿润 37. 区域④与③的分界线是 A.秦岭------淮河一线 B.大兴安岭------太行山-------巫山-----雪山 C.大兴安岭------阴山-------贺兰山 D.昆仑山------祁连山-------横断山