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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