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楼主
发表于 2011-10-8 14:04:39 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
Q13:
Juan bought some paperback books that cost $8 each and some hardcover books that cost $25 each.  If Juan bought more than 10 paperback books, how many hardcover books did he buy?
(1)      The total cost of the hardcover books that Juan bought was at least $150.
(2)      The total cost of all the books that Juan bought was less than $260.
答案选的C  
总觉的 该选E

还有这题
Q10:
Was the average (arithmetic mean) weight of the package mailed at a certain post office yesterday greater than 600 grams?
(1)    The total weight of the packages mailed at the post office yesterday was greater than 14,500 grams.
(2)      Fewer than 25 packages were mailed at the post office yesterday.
答案选的C
总觉改选E
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沙发
 楼主| 发表于 2011-10-10 10:11:28 | 只看该作者
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