题目

新疆塔里木盆地气候干燥，同纬度的天津则比较湿润，导致两地气候差异的主要原因是（   ）     A．海拔            B．地形        C．纬度位置        D．海陆位置 答案：D Peter has gone to Beijing, but I’m wondering why he ________ in such a hurry.A. left?????????? B. has left??????????? C. leaves????????? D. was leaving