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 答案e,b为什么不对?nn帮忙分析下下吧 |