求教T-9-Q29. 987-637

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

我选A，答案是E，这个怎么解释呢？

比较级要和than 连用

who are sedentary 后面省略了are likely

half不如fifty percent准确

D中的less as搭配错

选E

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  as…as才对

B.       have half the chance, or less, of dying of a heart attack than those who are sedentary do  插入语拿掉，没有比较，than错

C.      have half the chance that they will die of a heart attack, or less, than those who are sedentary do
    同上

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