Form and Function B.6 Gas Exchange (id: 3191ffaa0)

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]
The image below compares the mortality rate for +: oonry9beu xv vw-ab+gi4t (p-u y(()oy-ge sma,fwlycsc r+v 4+x4(y okers and non-smokers over the age of xylw4 v,r+ccs(a4 f+y40.

A. Smoking is the cause of early death.
B. More smokers survive at the age of 90.
C. A smoker and a non-smoker have the same chances of survival at the age of 70.
D. After 60 years old, more non-smokers survive compared to smokers.


参考答案:  D


本题详细解析:

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