标题: 求解GWD1-Q15 [打印本页] 作者: baby歙 时间: 2011-11-16 23:35 标题: 求解GWD1-Q15 求解GWD1-Q15 In parts of South America, vitamin-A deficiency is a serious health problem, especially among children.In one region, agriculturists are attempting to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in beta-carotene, which the body converts into vitamin A.The plan has good chances of success, since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.
Which of the following, if true, most strongly supports the prediction that the plan will succeed?
The growing conditions required by the varieties of sweet potato currently cultivated in the region are conditions in which SPK004 can flourish.
The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in color and texture, so traditional foods would look somewhat different when prepared from SPK004.
There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
应该选A，错选了B, B为什么错呢？ 作者: fdunan 时间: 2011-11-16 23:41
B说“so traditional foods would look somewhat different when prepared from SPK004”，也就是说SPK004不如以前的sweet potato，这是削弱啊。 A提供了可行性，加强。作者: fattybabe 时间: 2011-11-17 15:10
B是關於POTATO的模樣 跟題目無關作者: really89 时间: 2011-11-29 23:14
C呢，为什么错？作者: 胃痛不消化君 时间: 2011-12-6 12:01
从政府的观点上来看，如果你想让这样一个方案得到成功，你所考虑的最基本的是这样的一种土豆能否在该地区生长，而不是优先考虑它含的某种成分有多少。基本性原则。