标题: 求助一道GWD逻辑题~正在复习的同仁们进来帮个忙哈~ [打印本页] 作者: wsyzzydy 时间: 2011-11-4 00:46 标题: 求助一道GWD逻辑题~正在复习的同仁们进来帮个忙哈~ GWD1-Q15: In partsof South America, vitamin-A deficiency is aserious health problem, especially among children. In one region, agriculturists are attemptingto improve nutrition by encouraging farmers to plant a new variety of sweetpotato called SPK004 that is rich in beta-carotene, which the body convertsinto vitamin A. The plan has goodchances of success, since sweet potato is a staple of the region’s diet andagriculture, and the varieties currently grown contain little beta-carotene. Which ofthe following, if true, most strongly supports the prediction that the planwill succeed? A. The growingconditions required by the varieties of sweet potato currently cultivated inthe region are conditions in which SPK004 can flourish. B. The flesh of SPK004 differs from that of thecurrently cultivated sweet potatoes in color and texture, so traditional foodswould look somewhat different when prepared from SPK004. C. There are no other varieties of sweet potato thatare significantly richer in beta-carotene than SPK004 is. D. The varieties of sweet potato currentlycultivated in the region contain some important nutrients that are lacking inSPK004. E. There are other vegetables currently grownin the region that contain more beta-carotene than the currently cultivatedvarieties of sweet potato do.