A. Common Secondary Lung Cancers B. The Advantages Brought about by Routine Chest Checkup C. Relationship Between Mortality Rate

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问题 A. Common Secondary Lung Cancers
B. The Advantages Brought about by Routine Chest Checkup
C. Relationship Between Mortality Rate from Lung Cancer and Smoking Habits
D. Operable and Inoperable Lung Cancers
E  The Increasing Death Rate from Lung Cancer and Possible Causes
F  An Ordinary Type of Lung Cancer
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选项

答案E

解析 根据第二段第二句所说,烟瘾大的人(每天抽21~30根香烟)肺癌的死亡率几乎是不抽烟者的17倍,故可以得出此结论。
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