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. 背景:缺A 计划:种植s p的一个新品种叫S4,S4富含b-c,b-c可被人体转成A 评价:此plan好,因为s p在这里是主食并被广泛种植,而且现在种的s p含的b-c很少 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.无关新名词 C. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.说明这个计划中选材的正确而非预测计划会成功的原因 D. The varieties of sweet potato currently cultivated in the region contain some important nutrients that are lacking in SPK004. 无关 E. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.削弱
[此贴子已经被作者于2008-7-27 20:08:26编辑过] |