关于卫生服务研究，下列叙述正确的是（）
A.卫生服务研究是以卫生服务的供方、需方和第三方作为研究对象的
B.卫生服务研究的方法主要是综合评价法
C.卫生服务研究可分为卫生系统研究、卫生工作研究、防治效果研究及行为医学研究等
D.卫生服务研究的目的是将有限的卫生资源更好地分配和利用
E.向居民提供预防、保健、医疗、康复、健康促进等卫生服务
参考答案：A, C, D, E
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| Napoga Gurigo is a 12 -year- old girl in Ghana, Africa. It is 1 for her family to get clean water. The nearest place to get water is a dirty hole half a kilometer from their 2 . Every morning, Napoga 6 home at half past five to get water for her family. Sometimes it 4 six hours to get enough clean water. Napoga has no time to go to school 5 play with her friends. Millions of people in the world are like Napoga. They can't get enough clean water to 6 healthy. Most of those people are in Africa. Water covers 70 per cent of the Earth's surface. But most of that is sea water. We can't use it for drinking or cooking. Fresh water is 7 we use to drink, take showers and cook food. But fresh water 8 only 1 per cent of the Earth's surface. Many people have made wells to get clean water from 9 . But there still isn't enough. Scientists say that in 30 years, more than half of the people in the world 10 have enough clean water. | ||||
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