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今天再来看闹闹的问题, Scientists have made genetic modifications to cotton to increase its resistance to insect pests. According to farmers’ reports, the amount of insecticide needed per acre to control insect pests was only slightly lower for those who tried the modified seed than for those who did not. Therefore, since the modified seed costs more than ordinary seed without producing yields of higher market value, switching to the modified seed would be unlikely to benefit most cotton farmers economically. 是基因改变是为了增加自身抵抗虫害的能力, 就美亩所用的杀虫剂的数量而言,modified seed 的用量比ordinary seed只少一点点,从此推出:modified seed 比ordinary seed 成本要大,而没有产生更高的市场价值,所以,改用modified seed 不会造福农民兄弟。 most useful to know in order to evaluate the argument? 1,明确目的, 评价结论-- 改用modified seed 不会造福农民兄弟。
2,推导思路, genetic modifications 是为了increase its resistance to insect pests----〉modified seed 使用的农药少---〉(农药要花钱)花钱就少—〉benefit famers
3,做题, 所以e最好的了,不管农民是否使用modified seed,他们都需要使用大量的农药,加强了结论,改用modified seed 的确 不会造福农民兄弟。
Whether most of the farmers who tried the modified seed did so because they had previously had to use exceptionally large quantities of insecticide
至于b, out of scope, 文中只有两个比较对象,modified seed & ordinary seed , 一条主线,pesticide使用的多少——〉是否bebefit famers
other crops in B is irrelative to the arguement
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