题目内容
Pollution is an environmental concern for people all over the world. A study suggests that pollutants in the water, air and soil lead to more than 40 percent of the premature(未成年的)deaths in the world’s population. The majority of these deaths occur in the developing countries.
Water in many third world countries is polluted with chemicals. The World Health Organization (WHO) says that 1.1 billion people have little or no access to clean water. Most developing countries cannot afford water treatment facilities. Approximately 80% of infectious diseases in the world are caused by contaminated water.
Air pollution is a growing problem throughout the world. Indoor air pollution is one of the leading causes of lung cancer. Families in developing countries use open stoves for cooking and heating their homes. These homes do not have proper ventilation(通风). The smoke, which is full of chemicals gets trapped inside where families eat and sleep. Outdoor air pollution also causes diseases and illness, especially in industrial cities. Some developing countries rely heavily on coal, which is considered the dirtiest source of energy. In those countries, less than 5% of city people breathe clean air on an average day. Acid rain results mainly from the coal powered factories. Outdoor air pollution is also a concern in many wealthy countries. Those who live and work in urban centers such as Los Angeles or Toronto experience many warm days beneath a layer of smog. As more people move urban centers, premature deaths caused by pollution are expected to increase worldwide.
72. What is the text mainly about?
A. Some knowledge about water and air pollution.
B. The differences between water and air pollution.
C. Pollution---an environmental concern.
D. The differences between indoor and outdoor air pollution.
73. The underlined word “contaminated” in Para.2 probably means__________.
A. used B. salty C. polluted D. clean
74. Which of the following is NOT TRUE according to the passage?
A. Coal is the least clean natural resource.
B. The smoke from the stoves may lead to lung cancer.
C. Premature deaths are increasing in the world.
D. Outdoor air pollution only occurs in developing countries.
75. What will be most probably discussed in the following paragraph?
A. Solutions of pollution B. Soil pollution.
C. Effects of pollution. D. Noise pollution.
ACDB
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