637.Several studies have found that the coronary patients who exercise most actively have half or less than half the chance of dying of a heart attack as those who are sedentary. (A) have half or less than half the chance of dying of a heart attack as those who are sedentary (B) have half the chance, or less, of dying of a heart attack than those who are sedentary do (C) have half the chance that they will die of a heart attack, or less, than those who are sedentary do (D) are at least fifty percent less likely to die of a heart attack as those who are sedentary (E) are at least fifty percent less likely than those who are sedentary to die of a heart attack
没看明白楼主怎么分析的， 自己做了一下。首先，后面那个who are sedentary，证明这里必须用are。选D 或E 接着就是less likely to 还是less likely than，显然是必须有than。因此我选E
-- by 会员 zhangbutan (2010/7/9 23:10:40)
此are非彼are ，我觉得，句子结构应该是： patients （who exercise most actively）are at least fiftypercent less likely than those （who are sedentary） to die of a heart attack
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发表于 2010-7-9 21:09:03
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