30.pollutes air 根据第一段Air pollution refers to the introduction of some harmful gases and particulate matter(颗粒物质) in the Earth’s atmosphere which in turn results in pollution of air…可判断。
31.Causes 根据第一段There exist natural causes of air pollution可判断。
32.Natural 根据第一段There exist natural causes of air pollution可判断。
33.with oxygen 根据第二段When polluted air is inhaled(吸入) for breathing oxygen, several harmful gases are also inhaled along with this life-saving gas. These harmful gases are believed to affect animals in the same manner in which they affect humans.可判断。
34.damaging their organs 根据第二段Experts also suggest that the particulate matter the animals inhale over a long period can gather in their tissues and cause damage to their organs in the long run.可判断。
35.absorbed by animals 根据第二段animals can also come in contact with these contaminants from the food they eat and absorb them through their skin可判断。
36.no chance 根据第三段The rapid rate at which air pollution is occurring is not even giving the animals a chance to adapt to the changes in the environment.可判断。
37.Conclusion/Suggestion 根据全文最后一句可判断。
38.should make efforts 根据全文最后一句可判断。
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2017-04-24
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