Question

9．People who do not get enough vitamin A in their diet may develop night blindness．But in the developing world a lack of vitamin A causes much more serious harm to children．The World Health Organization links the lack of vitamin A to as many as 250.000 child deaths every year．
    One excellent source of vitamin A is found in sweet potatoes with orange flesh．Orange sweet potatoes contain high levels of beta-carotene（胡萝卜素），which our body can change into vitamin A． Experts say orange sweet potatoes specially bred （育种，培植） for growing conditions in Africa
could help solve the lack of vitamin A there．
     But，first，more people will need to be persuaded to eat them． Jan Low with the International Potato Center，a research organization says the sweet potato needs a better image in Africa． Jan Low says，…We do have an image problem with sweet potato in general in sub-Saharan Africa． It is seen as a crop of the poor．"Ms Low explains that sweet potatoes are mainly grown by poor women to feed their families in case another crop fails． The sweet potatoes commonly grown if Africa have white or yellow flesh． But，more importantly，they are low in vitamin A．
    Jan Low took part in a project to study how best to market orange sweet potatoes to Africans．She worked on an information campaign in Mozambique and Uganda．The campaign included radio messages about the nutritional benefits of the orange sweet potato．They advertised its ability to"fight diseases，make you strong，clear your skin and make you look healthy．"In areas without radio，the campaigners spread the message through community theater．The performances included singing，dancing and storytelling．And everywhere they went，the campaigners wore orange T-shirts and hats．They even drove orange vehicles．Jan Low says the color made it easier to gain public attention．
   Dan Gustafson heads the Washington office of the United Nations Food and Agriculture Organization． He points toefforts in the past to increase the popularity of other nutritious crops． He says most of these efforts failed because organizers of the campaigns did not consider what people wanted to eat．But Mr．Gustafson sees a better chance for the efforts to increase the popularity of the orange sweet potato in Africa． For one thing，except for the color，the vegetable is similar to what people already use．
66．What does the writer want to tell us in Para． 1？B
A． Vitamin A in food may cause night blindness．
B． People should get enough vitamin A in their diet．
C． The developing countries are in lack of vitamin A．
D． Vitamin A causes too many child deaths every year．
67．According to the passage，which of the following statements is NOT true？A
A． Orange sweet potato contains high levels of vitamin A．
B． Jan Low tries to persuade more people to eat orange sweet potato．
C． The campaign aims to advertise the benefit of orange sweet potato．
D． Fighting diseases，making you strong，clearing your skin and making you look healthy are the ability of the orange sweet potato．
68．Jan Low works forB．
A． the World Health Organization
B． the International Potato Center
C． the government of Mozambique and Uganda
D． the United Nations Food and Agriculture organization
69．The underlined phrase"points to"of Para． 5 is closest in meaning toD
A． lets            B． brings          C． takes           D． mentions
70．The passage mainly talks aboutA．
A． an image problem with orange sweet potato              
B． an information campaign in sub-Saharan area
C． the popularity of vitamin A                            
D． the function of vitamin A in people's diet．

Answer 1

分析 本文主要介绍了红薯中含有丰富的维生素A．文章讲述了人们在饮食中不能得到足够的维生素A，为了说服越来越多的人吃红薯，研究组织说，需要在非洲给红薯建立一个更好的形象．

解答 66．B 理解推断题．根据第一段People who do not get enough vitamin A in their diet may develop night blindness．But in the developing world a lack of vitamin A causes much more serious harm to children．可知在饮食中没有得到足够的维生素A的人可能会发展成夜间失明．但在发展中国家，缺乏维生素A对儿童造成更严重的伤害．由此可知，作者在第一段中想告诉我们：人们应该在他们的饮食中得到足够的维生素A．故选B．
67．A 细节理解题．根据第二段Orange sweet potatoes contain high levels of beta-carotene（胡萝卜素），which our body can change into vitamin A．可知橙色甘薯中含有高浓度的β-胡萝卜素，我们的身体可以将其转化成维生素A．故选A．
68．B 细节理解题．根据第三段Jan Low with the International Potato Center，a research organization says the sweet potato needs a better image in Africa．可知Jan Low为国际马铃薯中心工作．故选B．
69．D 词义辨析题．根据第五段He points toefforts in the past to increase the popularity of other nutritious crops．可知Dan Gustafson指出过去的努力提高了其他营养作物的欢迎度．由此推知"points to"的意思是"指出，提及"．故选D．
70．A 主旨大意题．全文主要讲述了为了说服越来越多的人吃红薯，需要在非洲给红薯建立一个更好的形象．故选A．

点评 本文考察学生的理解推断能力以及细心程度，只要抓住文章的关键词，采用寻读的方法查找细节，就能找到正确答案．