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4        FLAW IN THE REASONING        Electricity would revolutionize agriculture.Electrodes would be inserted into the soil        the current between them would kill bugs and weeds and make crop lants stronger        描述原文错误的为答案(D)Since weeds are plants, electricity would affect weeds in the same way as it would affect crop plants        prediction:a thing predicted; a forecast  revolutionize:change (something) radically or fundamentally

hudson

2        EVALUATION THE ARGUMENT        Sicentists propose placing seismic station on the floor of the pacific ocean to warn threatened coastal communities on the northwestern coast of the United States of approaching tidal waves caused by earthquakes.        Since forewarned communities could take steps to evacuate, many of the injuries and deaths that would otherwise occur could be avoided if the government would implement this proposal        对答案的相反的回答能对原文结论起WEAKEN和SUPPORT作用 Would there be enough time after receiving warning of an approaching tidal wave for communities to evacuate safely        propose:put forward (an idea or plan) for consideration or discussion by others  coastal : of, relating to, or near a coast  tidal : of, relating to, or affected by tides