单选题
By mentioning the 1964 report on smoking, Jeffrey Koplan implied that ______.
A、
more children tend to smoke today than yesterday
B、
both obesity and smoking require the attention of schools and society
C、
the present plan on obesity would function similarly as a landmark
D、
obesity and smoking are both health problems
【正确答案】
B
【答案解析】
[解析] 从文中可知，Jeffrey Koplan通过提及1694年的吸烟报道来表明肥胖和吸烟都需要学校和社会的关注。因此B项为正确答案。
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