题目

—Mr. Li, may I ask you more questions here tomorrow? —Well, I'm not sure if I______ here tomorrow. But you can leave massages on my WeChat if you ______ any questions at any time. A . come; have B . will come; will have C . will come; have D . come; will have 答案：C下列一些自然现象，由地球自转造成的是A. 昼夜长短的变化 B. 四季变化现象 C. 昼夜现象 D. 昼夜交替现象