However if we have s_____ knowledge
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However,if we have s_____ knowledge about these signs,there will be fewer casualties and losses .In areas where earthquekes often happen,scientists record mountain t_____ to see how hot and cold they are and take photos from the air.If there are any signs of a p____ disaster ,they will warn the government to be p_____for it .
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some
temperature
possible
preparing考点：we,if,However
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