【正确答案】 C

【答案解析】[听力原文] 31-35 In most corners of the world malnutrition is plainly a matter of outright insufficiency of food for population -- where the majority of the people do not obtain enough food calories to meet minimal needs for support of physical work and for maintenance of health. Elsewhere the problem may be not one of insufficient calories but of lack of specific nutrients essential for health. In Latin America, as in other places, the dread protein deficiency disease kwashiorkor is taking its heavy toll on children's lives. Strategic vitamins and minerals may be lacking due to traditional diets which are nutritionally imbalanced. Here people continue their eating pattern year after year without knowledge of what their dietary habits are doing to themselves and to future generation. With a basic knowledge of nutritional needs and deficiencies, efforts would be directed to finding food substitutes which could meet these needs. Mixtures of vegetable proteins, like soybeans and peanuts, could provide an abundance of cheap, useful protein where meats, eggs, and milk are not within economic reach of large groups in the population. Efforts could also be expanded on increasing the agricultural productivity in specific regions; where large areas are given over to relatively inefficient use as grazing land, the intensive production of vegetable protein crops could bring remedial nutrition to an undernourished population. [分析] 事实细节的找寻和判断。 根据题干中关键词cheap protein可定位到原文相关信息处Mixtures of vegetable proteins， like soybeans and peanuts，could provide an abundance of cheap，useful protein where meats，eggs，milk are not within economic reach of large groups in the population即由于经济原因买不起肉、蛋、奶的大量人口可以从蔬菜类蛋白混合物中获取丰富、便宜而有用的蛋白，大豆和花生就是很好的选择。由此可判断肉、蛋、奶的便宜的蛋白替代品可从大豆中获得。因此，C项内容是正确答案。 [解题关键] 正确理解句式复杂的句子意思是解题的关键。本题中原文句式复杂，全句是复合句，where引导的是状语从句。

【正确答案】 D

【答案解析】[分析] 事实细节的找寻和判断。 根据上题的原文可知，花生含有丰富的蛋白质可代替肉、蛋、奶等。由此可判断，花生是蛋白质的一个来源。因此D的说法是正确的。 [解题关键] 根据关键词正确找寻到原文相关处是解题的关键。

【正确答案】 D

【答案解析】[分析] 因果关系的找寻和判断。 根据原文In most comers of the world malnutrition is plainly a matter of outright insufficiency of food for population— where the majority of the people do not obtain enough food即世界大多数地方发生的营养不良是由于食物不足造成的，那些地方大多数人吃不到足够的食物。由此可见，世界范围内营养不良的主要原因是食物短缺。 [解题关键] 注意特殊标点符号的使用。本题原文中破折号后面的内容是对前面重要内容，即对世界范围内发生的营养不良的解释或重申。

【正确答案】 A

【答案解析】[分析] 词语的理解。 根据题干出现的Kwashiorkor可寻找到原文相关处... the dread protein deficiency disease kwashiorkor is taking its heavy toll on children's lives即可怕的蛋白质缺乏疾病kwashiorkor 是儿童生命的主要杀手。由此可见，A项内容与原文相符，为正确答案。 [解题关键] 能够根据题干关键词找到原文相关信息处。

【正确答案】 B

【答案解析】[分析] 主旨题。 原文第一句提到malnutrition营养不良的问题，随后对该问题进行详细分析，谈到营养不良造成的危害、形成的原因及解决的办法等。由此可判断，B项的内容与原文主要意思相符，是正确答案。 [解题关键] 1)注意开篇第一句，此句中的关键表达部分往往是全篇讨论的重点内容； 2)注意篇章中某一类词或短语出现的频度，若频度高则表明这类词或短语表达的内容是全文讨论的重点。本题原文中关于营养不良的词汇和短语出现频度颇高，如有 malnutrition，lack of specific nutrients，dread protein deficiency，nutritionally imbalanced， nutritional needs，deficiencies及remedial nutrition等。