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
16
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] 【B8】
选项
答案
official
解析
根据空格前的a research可知,此空需填入单数形式的名词。official“官员”。
转载请注明原文地址:https://tihaiku.com/zcyy/3419426.html
相关试题推荐
Manypeoplebelievetheglarefromsnowcausessnowblindness.Yet,darkgla
Manypeoplebelievetheglarefromsnowcausessnowblindness.Yet,darkgla
[originaltext]Withthedevelopmentofthecomputer,thepossibilityofstor
Teachingchildrentoreadwellfromthestartisthemostimportanttaskof
[originaltext]Aboutfiftydifferentvitaminshavebeenidentified,andade
[originaltext]Aboutfiftydifferentvitaminshavebeenidentified,andade
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
随机试题
WhatcanblindstudentsinKenyabenefitfromthetechnologytobeadopted?[br]
市场信息定性加工方法不包括()。
A.肺大疱 B.肺脓肿 C.浸润型肺结核空洞形成 D.慢性纤维空洞型肺结核
A.促进卫生行业作风建设 B.损害群众利益的不良行为 C.解决损害人民群众切
A.间断 B.连续 C.第一类间断 D.可能间断可能连续
班级管理的功能有哪些?
男性患者,68岁,全口只余,健康,近中舌侧倾斜,牙槽嵴丰满,上颌散在骨尖,颌间距
A.A/(A+B) B.A/(A+C) C.B/(B+D) D.C/(A+
男,25岁,发现血尿、蛋白尿2年。查体:BP150/90mmHg,双下肢无水肿
(2021年第2批真题)关于投标人正式投标时投标文件和程序要求的说法,正确的是(
最新回复
(
0
)