要知道计划到达目的地机场时的天气，应参考（）
A.航站航空天气预报
B.天气实况图
C.地面天气图
参考答案：A
It _____ my daughter half an hour _______ her homework last night.[ ]
A. takes, to finish
B. took, finish
C. took, to finish
D. took, finished
下列溶剂极性最小的是（）
A.乙酸乙酯
B.乙醇
C.水
D.甲醇
E.丙酮
