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
25
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/2803158.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
IfyourchildisaskingforUggbootsorapriceyhottoyfortheholidays,
Todayourknowledgeoffoodandwhatitdoesforourbodiesisfarmoreadva
[originaltext] Indonesia’sMountMerapihaseruptedwithitsbiggestexplosion
某木质家具仓库,地上2层,占地面积1300㎡,主要存储木质沙发、座椅、床等物品,
共用题干 EasternQuakesCanTriggerBigSha
掌握"适度"原则的哲学依据是:()A.质和量的统一 B.肯定和否定的相互
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
在我国,实施外汇管理、监督管理银行间外汇市场是()的职责。A.外汇管理局 B
在套利活动中,建仓时的价差是以价格较高的一“边”减去价格较低的一“边”,而在平仓
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)