经济重心从黄河流域转移到长江流域是在（    ）

蝗虫适于陆地生活，其形态结构特点有（　　）

①用气管呼吸  ②胸部有三对足，两对翅  ③有外骨骼，防止水分蒸发  ④有一对复眼和三个单眼．

    There was once a small boy who would never get dressed when his parents told him to,____ would he wear what they wanted him to. He preferred unusual clothes, but above all, he liked taking his time. His parents were always in a rush, and wanted him to be much____(quick), but the boy didn't like this, and he would slow down even more.

    One day, his parents got so angry when he refused to dress that they told him to go out without any clothes at all.____ (surprise), the boy followed his parents out of the door. He held a belief ____nobody could do anything to him.

    As the boy stood outside his house with nothing on,____ (wait) for his parents's car, along came the local pig farmer. The farmer,____ was almost deaf, had very poor eyesight. Not only that, but also he ____(forget) his glasses that day. When he saw the boy's pink skin, he thought it was one of his pigs. Shouting and pushing, the farmer forced____(he) into a pig cage. The boy begged him to stop but the deaf farmer couldn't hear.

    When found by his parents, the terrified boy never again wanted to be mistaken____ anything other than a human being. Now he's the first ____ (get) dressed, and always looks neat.