634.Senior executives had a larger percentage increase in pay in 1990 than the wages of other salaried workers.
(A) Senior executives had a larger percentage increase in pay in 1990 than
(B) The percentage of senior executives’ pay increase in 1990 was larger than for
(C) The 1990 increase in pay for senior executives was larger in terms of percentage than
(D) In 1990 senior executives had a larger pay increase in terms of percentage than did
(E) The pay of senior executives increased in 1990 by a larger percentage than did
the key:E。
比较考点：比较对象，the pay of senior executives——the wages of other salaried workers;do的用法
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
the key:E
比较考点：less----than----to do