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【单选题】
流行性感冒是一种呼吸道传染病,下列预防措施中属于切断传播途径的是A.
接种流感疫苗
B.
勤开窗透气
C.
积极锻炼
D.
隔离患者
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反馈参考答案：
举一反三
【简答题】Heavy smokers generally take no notice of the warning that smoking is harmful to health．
【单选题】Who are most likely to be overweight according to Katherine Flegal's study?
A.
Heavy smokers.
B.
Passive smokers.
C.
Those who never smoked.
D.
Those who quit smoking.
【简答题】理论回答并解决了哪些基本问题
【单选题】Though many of the heavy smokers have realized the serious effect that smoking has ______ their health, they continue to smoke instead of ______.
A.
for; giving it up
B.
on; quitting
C.
to; abandoning
D.
on; leaving
【单选题】Though the “No smoking” signs have existed for long in public places, heavy smokers often ________ them and light up cigarettes.
A.
abandon
B.
postpone
C.
decline
D.
ignore
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