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?
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?
A.The growing conditions required by the varieties of sweet potato currently cultivated in the region are conditions in which SPK004 can flourish.
B.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.
C.There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.
D.The varieties of sweet potato currently cultivated in the region contain some important nutrients that are lacking in SPK004.
E.There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do. 我选的是C,答案是A,请那位牛人大仙帮忙解答一下吧?
谢谢楼上的解答,可是还是有疑问呀,这个plan不仅仅是关于种植能否成功,还包括推行SPK004这一品种能否成功吧?选项A表明各品种sweet potato都可在一特定环境、水土中种植,可是没有突出SPK004的优点来呀?? 答案选A是不是因为选项C与题中“ the varieties currently grown contain little beta-carotene.”意思重复呢?(我在牵强的说服自己答案是A不是C…………)
agriculturists提出一个plan就是说让农民伯伯种这个土豆。。然后可以提高小孩子的维A blablabla不管它 然后题目的问题就是哪个选项可以支持这个plan会成功 “most strongly supports the prediction that the plan will succeed?”