What kind of animal affected by man－made chemicals is not referred in the passage？A．Polar
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What kind of animal affected by man-made chemicals is not referred in the passage？
A．Polar bears.
B．Mammals.
C．People.
D．Birds.
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正确答案：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。