ChaseDream
搜索
返回列表 发新帖
00:00:00

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?

正确答案: A

更多相关帖子

524

帖子

15

好友

4712

积分

ChaseDream

注册时间
2003-03-17
精华
8
解析
查看: 2945|回复: 3
打印 上一主题 下一主题

这题答案好像变了呀?

[复制链接]
跳转到指定楼层
楼主
发表于 2010-12-6 20:47:51 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
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.

以前做过这题,记得答案并不是这次查的A,哪位能相告一下,谢谢~
收藏收藏 收藏收藏
沙发
发表于 2010-12-6 21:35:53 | 只看该作者
C is the answer
板凳
 楼主| 发表于 2010-12-6 21:37:05 | 只看该作者
大侠,又是你呀!感谢再次相告~~~
地板
发表于 2010-12-8 00:18:34 | 只看该作者
我选a 请高手解读
您需要登录后才可以回帖 登录 | 立即注册

Mark一下! 看一下! 顶楼主! 感谢分享! 快速回复:

手机版|ChaseDream|GMT+8, 2024-11-9 10:33
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号

ChaseDream 论坛

© 2003-2023 ChaseDream.com. All Rights Reserved.

返回顶部