词汇讲解：
1. cigarette n. 纸烟, 香烟
例句：I like having cigarette with my drink.
我喝酒时喜欢抽烟。
2. recurrence n. 复发;反复;重现
例句：A recurrence of this kind of illness is possible.
这种病有可能复发。
3. worldwide adj. 全世界的, 世界范围的
例句：This book has worldwide sales.
这本书在全世界畅销。
4. analyze vt. 分析, 分解, 解释
例句：The teacher tried to analyze the cause of our failure.
教师设法仔细分析我们失败的原因。
5. increase v. 增加, 增大, 增多
例句：The population of this city has greatly increased.
本市人口已大大增加。
6. mortality n. 死亡率
例句：Poor hygiene led to high mortality among children.
卫生条件很差，道致了儿童的死亡率很高。
7. smok v. 抽烟
例句：The doctor told me not to smoke.
医生告诫我不要抽烟。
8. quit vt. 停止
例句：My father has quit smoking.
我父亲已戒烟了。
9. beneficial adj. 有益的, 有利的
例句：I hope your holiday will be beneficial to you.
我希望你的假期会对你有益。
10. diagnosis n. 诊断法; 诊断结论
例句：What was the doctor's diagnosis of your disease?
医生对你的病作出了什么诊断？
11. stimulate vt. 刺激; 激励
例句：They stimulated me to make greater efforts.
他们鼓励我要做出更大的努力。
12. feed vt. 向…提供
例句：They tried to feed me a false line about unexpected extra expenses.
他们试图向我提供假情况来解释那些意想不到的额外开支。
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