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There is a lot of water on the (e 1 ) ,but we cannot use mos

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There is a lot of water on the (e 1 ) ,but we cannot use most of it.About 97.4% of the earth's water is ( s 2 ) .We can’t drink it.Most of the fresh water is snow and ice near the North and South poles.
We can use only about one percent of the water on the earth.We use water from both lakes and (r 3 ).Some of the water evaporates(蒸发)and then becomes ( r4 ).Of course we use rain water for farms and other things.We use this water (a 5 ) and again.That’s we call (w 6 ) cycle.(循环)
There is a lot of water on the (earth ) ,but we cannot use most of it.About 97.4% of the earth's water is ( salty ) .We can’t drink it.Most of the fresh water is snow and ice near the North and South poles.
We can use only about one percent of the water on the earth.We use water from both lakes and (rivers ).Some of the water evaporates(蒸发)and then becomes ( rain ).Of course we use rain water for farms and other things.We use this water (again ) and again.That’s we call (watch ) cycle.(循环)
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