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  3. Which of the following can be the best title of this passage? The reason why the brain cells of the person who both smokes and

Which of the following can be the best title of this passage? The reason why the brain cells of the person who both smokes and

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问题 Which of the following can be the best title of this passage?
The reason why the brain cells of the person who both smokes and drinks heavily are dying is that ______.
选项 A、smoking reduces the oxygen carrying capacity of his blood
B、smoking and drinking make him malnourished
C、the problem of deficient oxygen supply and malnourishment act synergistically
D、it’s the normal metabolism
答案C
解析 这是一道细节题。文章第四段指出：如果嗜烟者因喝酒而导致酒精中毒，那么他很可能会营养不良；这种营养不良与他已有的缺氧问题结合，他的脑细胞就会因此而逐步死亡。这说明，C“供氧不足和营养不良相互作用”，与文章的意思符合。A和B只是部分原因，不全面；文中没有提到D。
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