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The elapsed time of the fastest transatlantic crossing mentioned by the author was 13 days and ______.
A．11.5 hoursB．7.5 hoursC．7 hoursD．4.5 hours
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参考答案：
C
解析：本题为细节推断题。文章中提到“The Red Jacket once sailed from New York to Liverpool in 13 days, 11.5 hours. The Mary Whiteridge took 4.5 hours off this record on a ran from Baltimore to Liverpool.”(红杰克曾用了 13 天 11.5 小时从纽约到利物浦，而玛丽·怀特瑞杰从巴尔的摩到利物浦比这一纪录少用了 4.5 小时。)经过计算，11.5—4.5=7。
C
解析：本题为细节推断题。文章中提到“The Red Jacket once sailed from New York to Liverpool in 13 days, 11.5 hours. The Mary Whiteridge took 4.5 hours off this record on a ran from Baltimore to Liverpool.”(红杰克曾用了 13 天 11.5 小时从纽约到利物浦，而玛丽·怀特瑞杰从巴尔的摩到利物浦比这一纪录少用了 4.5 小时。)经过计算，11.5—4.5=7。
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