48．We learn from the passage that women choose chunky heels because ________.

　　A．they want to walk comfortably

　　B．chunky­heeled shoes are cheaper than stiletto­heeled pairs

　　C．chunky heels do less harm to knees

　　D．chunky heels are not painful at all

　　答案　A　[细节理解题。根据第一段中的“Wide­heeled shoes feel comfortable, so women wear them all day long”可知妇女选择粗高跟鞋是因为粗高跟鞋穿着舒服，A项与此意思相符。]

　　49．The study mentioned in the second paragraph found that ________ .　

　　A．pressure on the foot is caused by high heels

　　B．the pressure is abnormal while walking barefoot

　　C．arthritis is always caused by pressure on the knees

　　D．both types of shoes have the same harm to the knees

　　答案　D　[推理判断题。从第二段中的“The scientists found that both types of shoes applied equal amounts of pressure to the knees”可知，两种高跟鞋给膝关节带来的压力是等量的，所以它们对膝关节的伤害是一样的。]

　　50．It can be inferred from the passage that ________.

　　A．people got to know the high heels are bad for health recently

　　B．people have known the high heels are bad for health for years

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