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1—5CBCAC 6—10 BCABA 11—15CABCA 16—20CBABC 21—25 ABACC 26—30BDBDD 31—35ACDAD 36—40DABDC 41—45ACBAC 46—50DABCD 51—55ACDBC 56—60AABCA 61—65BACAD 66—70CCBDA 71—75ADCAD 76 1. started 77 problem 78 Which 79. check 80 .on 81 .afraid 82 . repair 83. again 84 happened 85 myself
One possible version: The Water Cycle As we all know, more then 70% of the surface of the earth is covered by water. Do you know where the water comes from and why the water doesn’t dry up? This is because the water cycle. When the weather is fine, the heat of the sun evaporates water from the rivers, lakes, seas and oceans. Thus water vapor is formed, which rises and forms clouds in the air. When the clouds rise, they are cooled. The higher they rise, the cooler they are. This causes more and more water vapor to condense. In this way, the tiny drops of water in the clouds get bigger and bigger until they are heavy enough to fall to the earth as rain. Some of the rainwater sinks into the ground, and is used up by plants. Most of them goes back to the rivers, lakes, seas and oceans. This is called the water cycle, which starts all over again.
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