题目内容：
第47题__________
A．A meager diet may keep you thin. B．It means an extra 11 million tons of carbon dioxide.
C．The obese child was picked last.
D．US economist Martin Schmidt suggests a tax on fast food delivered to people's cars.
E．Science has shown that they have limited personal control over their weight.
F．No one asked whether there was really a cause-and-effect relationship.
参考答案：
答案解析：