A new World Bank report warns that children who do not get enough good food in the first two years of life suffer lasting damage. They may be underdeveloped or underweight. They may suffer from poor health or limited intelligence. In addition, poorly nourished children are more likely to drop out of school and earn less money as adults. The report notes that too little food is not the only cause of poor nutrition. Many children who live in homes with plenty of food suffer for other reasons. For example, the study says that mothers often fail to give their newly born babies their breast milk. This milk-like substance is called colostrums (初乳). It is full of nutrients that improve a baby’s ability’s to fight infections and disease. The study also links malnutrition (营养不良) to economic growth in poor countries. A lack of nutrition in early childhood can cost developing nations up to three percent of their yearly earning. Many of these same countries have economies that are growing at a rate of two to three percent yearly. The study suggests that poor countries could possibly double their economic growth if they improved nutrition. Africa and South Asia are affected the most by poor nutrition. The study says about half of all children in India do not get enough good food. The World Bank study also notes that rates of malnutrition in South Asia are almost double those in central and southern Africa. Other parts of the world are also severely affected, including Indonesia, Uzbekistan, Yemen, Guatemala and Peru. The study recommends that developing countries change their policies to deal with malnutrition. Instead of directly providing food, the study suggests educational programs in health and nutrition for mothers with young babies. It also recommends cleaner living conditions and improvements in health care. World Bank nutrition specialist Meera Shekar said the period of life between pregnancy and two years is extremely important. Governments with limited resources should take direct action to improve nutrition for children during this period. What’s the main topic of the passage? A.Poor nutrition in developing countries. B.World Bank research. C.Economic growth rate. D.Ways to fight malnutrition in developed countries. It can be inferred from Paragraph 2 that children who get sufficient food might suffer malnutrition because____________ .A.they eat too much rubbish food everyday B.they take little physical exercise C.they are lacking in some kinds of necessary nutrients D.their mothers do not have time to take care of them in the day If a poor country managed to provide enough food for children, the yearly economic growth rate would__________A.drop B.not change C.rise D.exceed 2 percent According to Paragraph 4, nearly 50 percent of children suffer malnutrition in__________A.Uzbekistan B.South Asia C.South Africa D.India Meera Shekar believes that poor countries should help malnourished children by__________ .A.providing food directly B.educational programs in health and nutrition C.improvement living condition D.improving health care