题型:问答题 读经纬网图,回答1—2题。1、设A、B两地和A、D两地之间的最短距离分别为S1和S2,则[ ]A.S1=0.5S2B.S1=S2C.S1=1.5S2D.S1=2S22、若A、C两地同时位于晨昏线上,则一年中这种情形会出现[ ]A.1次B.2次C.3次D.4次 查看答案
题型:问答题 The farmers in the fields when it to rain.[ ]A. worked;was began B. were working;beganC. were working;was beginningD. worked;began 查看答案