首页
登录
职称英语
Lack of Vitamin A is the leading cause of blindness among children in develo
Lack of Vitamin A is the leading cause of blindness among children in develo
游客
2023-07-02
42
管理
问题
Lack of Vitamin A is the leading cause of blindness among children in developing countries.
These children do not get enough Vitamin A in the food they eat.
In Africa, more than 3,000,000 children【B1】______blindness or sickness caused by lack of Vitamin A Scientists say sweet potatoes are rich in beta carotene(β-胡萝卜素)—the natural orange-colored【B2】______ that the human body needs to produce Vitamin A.
One recent study found that orange-colored sweet potatoes are an excellent food for families in southern and eastern Africa. Scientists from Kenya, Uganda and the International Potato Center in Peru【B3】______ the ten-year study. The scientists found that several kinds of sweet potatoes produce excellent harvests in some areas where Vitamin A【B4】______ is widespread. They said sweet potatoes provided large amounts of Vitamin A at a very low cost.
People in Africa liked the orange-colored sweet potatoes used in the study. Some people had thought Africans would not accept such potatoes because they are sweeter than 【B5】______ sweet potatoes. The traditional African sweet potato is white and 【B6】______ little or no beta-carotene. However, research studies and taste tests showed the new sweet potatoes are able to【B7】______ the local crops. Wanda Collins is a research【B8】______ at the International Potato Center. She says the study found that mothers in Africa accepted the orange-colored sweet potatoes. Women who knew the value of these potatoes continued to buy them when food【B9】______ caused price increases. Ms. Collins says the next step is to develop this【B10】______ crop in other areas of Africa. [br] 【B7】
选项
答案
compete with
解析
根据空格前的are able to可知,此空需填入原形动词成分。compete with“与……竞争”。
转载请注明原文地址:https://tihaiku.com/zcyy/2803159.html
相关试题推荐
BullyingandChildrenA)Whatyoursonisdescribingisb
BullyingandChildrenA)Whatyoursonisdescribingisb
BullyingandChildrenA)Whatyoursonisdescribingisb
BullyingandChildrenA)Whatyoursonisdescribingisb
Atschoolourchildrenaretaughttoaddupandsubtractbut,extraordinaril
Atschoolourchildrenaretaughttoaddupandsubtractbut,extraordinaril
Whenchildrenhitpuberty(青春期),theirabilitytolearnasecondlanguagedro
Whenchildrenhitpuberty(青春期),theirabilitytolearnasecondlanguagedro
Whenchildrenhitpuberty(青春期),theirabilitytolearnasecondlanguagedro
Whenchildrenhitpuberty(青春期),theirabilitytolearnasecondlanguagedro
随机试题
DoSomethingtoImproveYourLifeI.Wrongopinionstowardslife1)wrongopini
YoumightthinkthathamburgerswereinventedintheUnitedStates,butthat
ItiscommonlybelievedintheUnitedStatesthatschooliswherepeoplego
Whatistherelationshipbetweenthespeakers?[br][originaltext]M:Hi,Sue.W
Duringtheearlyperiodofoceannavigat
下列关于自行申报纳税管理相关政策的表述,不正确的是( )。A、居民个人从中国境外
在一个不透明的盒子中放有四张分别写有数字1、2、3、4的红色卡片和三张分别写有数
关于老年社会工作,下列表述错误的是()。A.老年人一般不需要社会服务 B.贫
消化道出血病人,下列哪些检查可能对诊断和治疗有帮助A.急诊胃镜检查 B.急诊肠
最常见也是最简便的风险度量方法是()。A:收益预期范围度量法B:方差度量法C
最新回复
(
0
)