单选题某一个公司的所有电话分机都是偶数.如果每一个分机号都是由5个数字1，3，4，5，6组成，那么这个公司最多能够有多少个五位分机号码?

单选题在一次宴会上一共有12个人，如果每个人和其他的人各握手一次，那么一共有多少次握手?

单选题What was the units digit of 1713-17?

单选题一个正整数的映像可由颠倒其数字得到，比如321的映像是123，那么一个五位数字和其映像的差一定能够被下面哪一个整除?

单选题 ①In the 1920s

单选题小明的贮钱罐里一共有9.45元的硬币，硬币共有四种。5分硬币和5角硬币的数目相同，1角硬币的个数是5分硬币数目的3倍。那么小明至少有多少个1分硬币?

单选题. ① In 1919 Britain experienced its largest ever reduction in industrial working hours, to 48 per week. ②In Dowie's view the 48-hour week played a central role in Britain's poor economic performance during the 1920s. ③Dowie argued that the reduction, together with rapid wage growth, drove up prices. ④However, Greasly and Oxley found that the First World War (1914-1918) constituted a more powerful negative macroeconomic shock to Britain's competitiveness. ⑤And Scott argues that Dowie's thesis ignores considerable evidence that hourly productivity improves when hours are reduced from a high base level. ⑥Crucially, Dowie's thesis does not acknowledge that hours were reduced to around 48 hours a week for industrial workers in most industrialized nations at this time so far—undermining any potential impact of reduced hours on industrial productivity relative to other nations.39. Which of the following, if true, provides the strongest support for Scott's argument? ______

单选题Which of the following could be the remainder when 287 is divided by 3?

单选题 ①Unlike the static

单选题If the integer k has remainder 7 when divided by 8, what is the remainder when 3k is divided by 4?

单选题A triangle has one side of length 5 and another side of length 14. What are the greatest and least possible integer values for the length of remaining side?

单选题 ①Historian E

单选题集合{1，2，3，4，5}有多少个包含元素1的子集?

单选题. ①The North American red squirrel has expanded its range into Indiana in conjunction with an increase in the fragmentation of forests due to agriculture and with a decrease in the number of gray squirrels, whose population is sensitive to forest fragmentation. ②Red squirrels tend to hoard food in a central location, while gray squirrels are scatter hoarders. ③Burial of nuts by scatter hoarders is highly beneficial for the regeneration of nut-producing trees. ④Red squirrels would have to collect 1,000 walnuts to achieve the same germination success that results from the handling of 150 walnuts by gray squirrels. ⑤If red squirrels successfully colonize the fragmented landscapes of Indiana in response to decreasing numbers of gray squirrels, they may not compensate completely for the loss of gray squirrels as seed dispersers.11. The passage implies that compared with gray squirrels red squirrels ______

单选题If a1=0, an=an-12+4, which of the following is approximately to a100?

单选题 In the shallow end of Lake Tomwa

单选题If the numerator of a certain fraction is doubled and the denominator is decreased by 5, the new fraction is equivalent to 23. If the original fraction is equivalent to 27, What is the sum of the nume

单选题. Elizabeth Bishop's Complete Poems(1927-1979) has come to seem to most of its readers so achieved and sufficient as a life's work that it is hard not to lose sight of how slowly Bishop wrote poems and of how few poems, finally, she completed. But Bishop herself never ceased to find her productivity inadequate. The size and pace of her output were always in her eyes a failing (vaguely moral in complexion) for which she apologized throughout her career, although, as I will argue in this essay, Bishop's inability to write more poems than she did was also a refusal to do so. The small, manageable size of Bishop's body of work has facilitated its extraordinary critical reception since her death. (Robert Lowell, whose oeuvre is so much larger, has never had a complete edition of his poetry published.) Yet the size of her work is also a sign of Bishop's alienation, that is, her uneasy, resistant relation to the literary culture that today claims her as the major poet of her generation.31. The passage indicates that the small size of Bishop's body of work contributed to bringing about which of the following? ______

单选题在某一种溶液中，牛奶、酒精、水的比例是4：100：200；现在溶液发生了改变，牛奶、酒精的比例增倍，而牛奶、水的比例减半，如果改变后的溶液一共含有1000立方厘米的酒精，那么溶液中含有多少立方厘米的水?