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  3. The accessibility of clean water is one of the most important components in the health of young children. In many areas, disease

The accessibility of clean water is one of the most important components in the health of young children. In many areas, disease

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问题     The accessibility of clean water is one of the most important components in the health of young children. In many areas, disease caused by dirty water is a 【S1】______ cause of poor health and death among young children. This is a particular problem in rural areas, where sources of water may not be 【S2】______ , and neither the quantity nor the 【S3】______ of the water is adequate.
    In recent years, many programs to improve the quality of water supplies in rural areas have been 【S4】______ . These have included educating people about health and encouraging greater community 【S5】______ . In addition, many countries have improved the organization of government health control and technical services at both the national and local levels. Health control includes the establishment of regulations as well as close 【S6】______ and enforcement. Technical services, on the other hand, 【S7】______ a wide range of activities. These include providing 【S8】______ such as pumps, water pipes, and well-drilling equipment in addition to the training of people to operate and maintain this equipment. Technicians also help to organize the people of the community to build water supply projects. While 【S9】______ to pure water continues to be a problem in many parts of the world, programs such as these have 【S10】______ greatly to the general improvement of health in rural areas.

A) available          B) implemented           C) comprise             D) suspected
E) supervision        F) minor                 G) quantity             H) access
I) involvement        J) supplies              K) consist              L) major
M) contributed        N) reliable              O) realization
【S1】
选项
答案L
解析 从语法结构上判断应选择一个形容词。备选词中形容词有四个，即available(可得到的)，minor(次要的)，major(重要的)和reliable(靠得住的)。所以选择L最合适。
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大学英语四级

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