【简答题】Replace the underlined words in the first group with the words from the second group.
【简答题】Matching the first group of words with the explanation of these words in the second group.
【单选题】The world's elderly population will exceed that of children by 2060, when each group ________ to account for about one fifth of the population. [ ]
【判断题】轴是机器人控制、运动学和动力学的中心对象
【单选题】( ) are a group of words and expressions that refer to the personal, temporal or spatial characteristics of the context within which a text is produced.
【简答题】在全球国际旅游人次总量中,为什么近距离的国际旅游会占绝大比重?
【简答题】Match words in group 1 with other words in group 2.
【简答题】Match the words in group 1 with some other words in group 2.
【单选题】Tomorrow the mayor is to a group of Canadian businessmen on a tour of the city. [ ]
【判断题】轴是机器人控制、运动学和动力学的中心对象。