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作者: saharaa 时间: 2011-2-1 08:15
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
所以我认为两者没有必然联系
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