No. 2
Scientists around the world have been studied the warmth of waters in the Pacific Ocean being known as EL Nino. The appearance of EL Nino is said to effect the weather around world. Now scientists still do not completely understand them. Yet they find they can use it to tell the future in different area in the world. The scientists write about their recently work in the magazine Nature. Their computer program can tell when a EL Nino will appear. They think what this can provide an effective early warning system and prevent much of the disasters from happening.
1．studied→studying 2．去掉being 3．effect→affect 4．world前加the
5．them →it 6．area→areas 7．recently→recent 8. a→an
9．what→that或去掉 10．much→many
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