f it took Carlos [?] hour to cycle from his house to the library yesterday, was the distance that he cycled greater than 6 miles? (Note:1 mile = 5,280 feet)
(1)The average speed at which Carlos cycled from his house to the library yesterday was greater than 16 feet per second.
(2)The average speed at which Carlos cycled from his house to the library yesterday was less than 18 feet per second.
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发表于 2008-9-11 23:36:00
