本题目来源于试卷: Form and Function B.6 Gas Exchange，类别为 IB生物学
[单选题]
How can tobacco smoke cause breathing diffiqle/no7ihx39u8k ha ,culties in a q cy+66j17*a fnsvss3og n2asmokers?
A. It reduces the amount of mucus in the lungs.
B. It decreases the concentration of carbon monoxide in the blood.
C. It leads to an increase in the surface area of the lungs.
D. It increases the size of the alveoli.
参考答案: D
本题详细解析:
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