2. 外语
  3. A. sufficient B. margins C. nearly D. barely E. advances F. exist G. slaughtered H. while I. problems J. large K. doubtf

A. sufficient B. margins C. nearly D. barely E. advances F. exist G. slaughtered H. while I. problems J. large K. doubtf

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问题     A. sufficient B. margins C. nearly D. barely E. advances
    F. exist G. slaughtered H. while I. problems J. large
    K. doubtful L. denying M. anticipating N. because O. impossible
    What does the hamburger say about our modern food economy? A lot, actually. Over the past several years Waldo Jaquith intended to make a hamburger from scratch, to no avail. "Further reflection revealed that it’s quite impractical—【C1】______ impossible—to make a hamburger from scratch," he writes. "Tomatoes are in season in the late summer. Lettuce is in season in spring and fall. Large mammals are【C2】______ in early winter. The process of making such a burger would take nearly a year and would inherently involve omitting some core hamburger ingredients."
    That the hamburger—our delicious and comforting everyman food—didn’t【C3】______ 100 years ago is a greasy, shiny example of all that is both right and wrong with our modern food economy. Thanks to fertilizers, genetically modified crops, concentrated farming operations and global overnight shipping, much of the world was lifted out of starvation【C4】______ it could finally grow【C5】______ quantities of food with decreasing labor input.
    But these same【C6】______ that allow food to be grown out of season and in all corners of the globe contribute to a whole host of environmental【C7】______. The "industrialization of food," as author Paul Roberts puts it, is an endless cycle driven by very small price【C8】______ that force food processors to adopt more advanced techniques to produce even more food at lower prices. This system will only be aggravated as food demand increases. Recently David Tilman and Jason Hill of the University of Minnesota released a study【C9】______ that global food demand could double by 2050. It’s【C10】______that our current, impractical food economy can sustain that demand.
【C3】
选项
答案F
解析 空格前的didn’t提示空格处需填入动词。主语为hamburger，由100 years ago可推测汉堡包在100年前还不“存在”，因此词库中的exist“存在”正确。
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