In the text below some words are missing. Drag words from the box below to the appropriate place in the text. To undo an answer choice, drag the word back to the box below the text.
下面的文本缺了一些词。请把词框里的词拖到文中合适的位置；要撤销选择，把词拖回文本下方的词框即可。
Wind is air moving around. Some winds can move fast as a racing car, over 100 miles per . Winds can travel around the world. Wind can make you feel cold because you lose heat from your body when it is windy. Weather forecasters need know the speed and direction of the wind. the strength of wind is measured using the Beaufort scale from wind force when there is no wind, to wind force 12 which can damage houses and buildings and is called hurricane force.
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