单项选择,下面这个题选什么?Carbon dioxide,which makes a____between us and the sun,prevents the heat from getting out of the atmosphere easily,so the earth is becoming warmer.A.difference B.comparision C.connection D.barrier选什么?为什
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![单项选择,下面这个题选什么?Carbon dioxide,which makes a____between us and the sun,prevents the heat from getting out of the atmosphere easily,so the earth is becoming warmer.A.difference B.comparision C.connection D.barrier选什么?为什](/uploads/image/z/6309764-44-4.jpg?t=%E5%8D%95%E9%A1%B9%E9%80%89%E6%8B%A9%2C%E4%B8%8B%E9%9D%A2%E8%BF%99%E4%B8%AA%E9%A2%98%E9%80%89%E4%BB%80%E4%B9%88%3FCarbon+dioxide%2Cwhich+makes+a____between+us+and+the+sun%2Cprevents+the+heat+from+getting+out+of+the+atmosphere+easily%2Cso+the+earth+is+becoming+warmer.A.difference+B.comparision+C.connection+D.barrier%E9%80%89%E4%BB%80%E4%B9%88%3F%E4%B8%BA%E4%BB%80)
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