手拖着鼠标在讨论贴的页数上滑动,眼珠随着每一个讨论转动,耳朵里充斥的都是那个孩子的吵闹声,大脑是空白,心里是——闷。。。。 这个逻辑题,偶选的E,答案是E,但刚才看讨论贴,发现是争议题BE争议。谁来给讲讲?什么也看不进去!!!!!!!! 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. Which of the following would it be most useful to know in order to evaluate the argument? A. Whether farmers who tried the modified cotton seed had ever tried growing other crops from genetically modified seed B. Whether the insecticides typically used on ordinary cotton tend to be more expensive than insecticides typically used on other crops C. Whether for most farmers who grow cotton it is their primary crop D. Whether the farmers who have tried the modified seed planted as many acres of cotton, on average, as farmers using the ordinary seed did E. Whether most of the farmers who tried the modified seed did so because they had
[此贴子已经被作者于2006-12-30 13:51:56编辑过] |