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  3. According to World Health Organization, how many people are killed by outdoor air pollution? What kind of animal affected by ma

According to World Health Organization, how many people are killed by outdoor air pollution? What kind of animal affected by ma

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问题 According to World Health Organization, how many people are killed by outdoor air pollution?
What kind of animal affected by man-made chemicals is not referred in the passage?
选项 A、Polar bears.
B、Mammals.
C、People.
D、Birds.
答案D
解析 细节题。根据题干信息词man-made chemicals和affected定位到第一个小标题下第二段末句Affected species include polar bears-so not even the Arctic is immune．And the chemicals climb the food chain，from fish to mammals，and to us，即：受人造化学制品影响的种类包括北极熊、从鱼到哺乳动物的生物链，也包括人，未提到鸟，故选D。
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