【单选题】The professor asks Tim to go ahead. Which of the following words is not a synonym?
【单选题】工业生产上,对于聚合级乙烯的纯度要求为:
【单选题】可以将两个以上的 .max 文件合并在一起的菜单项是( )
【单选题】— Are the food and clothes_________ the quake-hit area? — Yes, they will be flown there ahead of time. [ ]