单词：b-c ratio (benefit-cost ratio)
单词：b-c ratio (benefit-cost ratio) 相关文章
Whew! Henry said several hours later when the children finally finished moving the construction materials to the hall. Dr. Skyler wasnt kidding. That sure was a lot to clear out of there. Jessie pushed back her braid for the umpteenth time. Not to me
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In a short time the train stopped at Glass Factory Junction. The Aldens got off the train and looked around. They could not see any sign of a town. There was a small freight station on one side of the tracks and a large factory on the other. Everythi
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For the last two years, the Los Angeles area has seen an increasing number of metal thefts, reported Paul Moyer, co-anchor of the local 6 oclock news. Sometime before dawn Wednesday, thieves had stolen the copper wire out of six lamp posts. A day ear
365个英语简短小故事
By Deepak Dobhal and Amy Katz New York City 09 March 2006 watch Manhole Art report This manhole cover houses a water valve in a U.S. street The utilitarian manhole cover is getting a lot of attention
2006年VOA标准英语（三月）