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prep12-48
In 1926, in her second attempt to swim across the English Channel, Gertrude Ederle not only crossed the Channel against currents that forced her to swim thirty-five miles instead of the minimal twenty-one, but she set a record for speed as well, by swimming the distance in almost two hours faster than anyone had yet done.
A. but she set a record for speed as well, by swimming the distance in almost two hours faster than anyone had yet done
B. but also set a record for speed, swimming the distance almost two hours faster than anyone had yet done
C. but also swam the distance in almost two hours faster than anyone had yet done, and setting a record for speed
D. but also setting a record for speed by swimming the distance in almost two hours faster than anyone had yet done
E. but, swimming the distance almost two hours faster than anyone had yet done, she also set a record for speed
正确答案B
想问：
修饰语 swimming the distance almost two hours faster than anyone had yet done里，是 (she) swimming the distance almost two hours和any one had yet done比较吗，这样也可以吗？？？分词形式和句子形式比较？？还是说我的理解有误？
prep12-33
The infant mortality rate has decreased steadily over the past decades and is now at a lower rate than ever before.
A. now at a lower rate than
B. now bower than
C. now a lower rate than
D. presently lower than it was
E. presently lower than the rate was
正确选项B
想问：
D选项有什么问题？只是形式冗杂吗？因为我从语法结构上感觉没有什么大问题。
官方的解释：The phrase ever before introduces a continuous expanse of time before the present moment(presently) that should be described with the present perfect tense it has been rather than the simplepast tense of it was. Also the word order it was ever is the reverse of the more standard and lessawkward it ever was. --是说ever before引出了时间上的一个连续性跨度发生在presently之前所以应该用现在完成时。而且it was ever before和更标准的it ever was相反（什么意思？？？？我没看明白）
感觉官方说法并不能让我信服.....
希望能有大神帮我解答！！感恩！！！
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发表于 2017-11-10 00:51:24
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