46. According to recent studies comparing the nutritional value of meat from wild animals and meat from domesticated animals, wild animals have less total fat than do livestock fed on grain and more of a kind of fat they think is good for cardiac health.
A. wild animals have less total fat than do livestock fed on grain and more of a kind of fat they think is
B. wild animals have less total fat than livestock fed on grain and more of a kind of fat thought to be
C. wild animals have less total fat than that of livestock fed on grain and have more fat of a kind thought to be
D. total fat of wild animals is less than livestock fed on grain and they have more fat of a kind thought to be C
E. total fat is less in wild animals than that of livestock fed on grain and more of their fat is of a kind they think is
答案C中的wild animals have less total fat than that of livestock是谁和谁的比较，That指代前面的total fat.
51. According to a 1996 survey by the National Association of College and University Business Officers, more than three times as many independent institutions of higher education charge tuition and fees of under $
A. than those that charge
B. than are charging
C. than to charge
D. as charge D
E. as those charging
E为什么不可以？
是不是我的水平太差了，怎么这么多问题？
46. 对.
47. more than three times as many independent institutions of higher education charge tuition and fees of under $
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