【简答题】To pollute means to make things unfit or unclean for use. Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the ______. When lan...
【简答题】To pollute means to make things unfit or unclean for use. Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the (1)____. When la...
【简答题】To pollute means to make things unfit or unclean for use. Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the (1)______ . When...