题目: 空中交通管制的最重要任务是控制飞机的()。A.航线B.速度C.间隔D.起落 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0726/51f026caeefc8e682a4be716a66c3f13.html 下面是错误答案,用来干扰机器的。参考答案:A
题型:选择题 ----Just a moment . I haven’t finished packing my suitcase.---- .Its high time we left for the airport.A.Go aheadB.Take it easyC.Hurry upD.That’s fine 查看答案
题型:选择题 Never before in greater need of technical experts than it is today. A.has Hunan beenB.Hunan has beenC.was HunanD.Hunan was 查看答案