题目

假期，小玲到五指山区登山，发现山上气温比山下低，其成因是 A . 经度差异 B . 纬度差异 C . 海拔差异 D . 海陆差异 答案：C— __________ the way, did you see Mrs. Lee __________ your way here?— Yes. She was waiting for a bus.A.On; byB.By; inC.In; onD.By; on