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
2024-02-03
39
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] 【B6】
选项
答案
contains
解析
根据空格前的并列连词and和空格后的名词短语little or no beta-carotene可知,此空需填入谓语,与and前的is一起作句子的并列谓语。contain“包含”。
转载请注明原文地址:https://tihaiku.com/zcyy/3419424.html
相关试题推荐
Manypeoplebelievetheglarefromsnowcausessnowblindness.Yet,darkgla
Manypeoplebelievetheglarefromsnowcausessnowblindness.Yet,darkgla
[originaltext]Withthedevelopmentofthecomputer,thepossibilityofstor
[originaltext]Withthedevelopmentofthecomputer,thepossibilityofstor
[originaltext]Withthedevelopmentofthecomputer,thepossibilityofstor
Teachingchildrentoreadwellfromthestartisthemostimportanttaskof
[originaltext]Aboutfiftydifferentvitaminshavebeenidentified,andade
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
随机试题
Youshouldspendabout20minutesonthistask.Thegraphbelowcomparesfigures
ThefollowingareendangeredspeciesEXCEPT[originaltext]Manykindsofanim
商品黄金记录在国际收支平衡表的()。A.经常项目 B.储备资产项目 C.统
归脾汤常用于治疗哪一型特发性血小板减少性紫癜A、瘀血内阻 B、血热妄行 C、
粪便中发现巨噬细胞有助于诊断A.上消化道出血 B.霍乱 C.急性细菌性痢疾
下列关于城市环卫设施的表述,哪项是正确的?( )A.生活垃圾填埋场应远离污水处
某旧住宅因没有独立的卫生间所造成的价值损失,属于()。A.物质折旧 B.功能
为实现管理工作中的有效沟通,需要克服的障碍主要有( )。A.沟通方式不当 B
( )是用于计算污染物排放量的常规和最基本的方法。(新教材已删除)A.查阅资料(
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
最新回复
(
0
)