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标题: [求助]GWD-2-17,21帮忙看看两道题,多谢 [打印本页]
作者: theresani    时间: 2005-11-8 22:47
标题: [求助]GWD-2-17,21帮忙看看两道题,多谢

Q17没怎么看懂, why选C?   Q21, 偶怎么觉得应该选D



Q17:


The quality of unrefined olive oil is not actually defined in terms of acidity, yet extensive tests have shown that the less free oleic acid an unrefined olive oil contains per liter, the higher its quality.  The proportion of free oleic acid that an olive oil contains is an accurate measure of the oil’s acidity.



If the statements above are all true, which of the following conclusions is best supported by them?




  • When an olive oil is refined, the concentration of oleic acid in the oil is reduced.

  • The quality of an unrefined olive oil can be determined only by accurately measuring its acidity.

  • If an unrefined olive oil is intermediate in acidity between two other unrefined olive oils, it will also be intermediate between them in quality.

  • Free oleic acid is the only acid that unrefined olive oil contains.

  • People who judge the quality of unrefined olive oils actually judge those oils by their acidity, which the judges can taste.

    • Q21:   


    Environmental organizations want to preserve the land surrounding the Wilgrinn Wilderness Area from residential development.  They plan to do this by purchasing that land from the farmers who own it.  That plan is ill-conceived:  if the farmers did sell their land, they would sell it to the highest bidder, and developers would outbid any other bidders.  On the other hand, these farmers will never actually sell any of the land, provided that farming it remains viable.  But farming will not remain viable if the farms are left unmodernized, and most of the farmers lack the financial resources modernization requires.  And that is exactly why a more sensible preservation strategy would be to assist the farmers to modernize their farms to the extent needed to maintain viability.



    In the argument as a whole, the two boldface proportions play which of the following roles?




  • The first presents a goal that the argument rejects as ill-conceived; the second is evidence that is presented as grounds for that rejection.

  • The first presents a goal that the argument concludes cannot be attained; the second is a reason offered in support of that conclusion.

  • The first presents a goal that the argument concludes can be attained; the second is a judgment disputing that conclusion.

  • The first presents a goal, strategies for achieving which are being evaluated in the argument; the second is a judgment providing a basis for the argument’s advocacy of a particular strategy.

  • The first presents a goal that the argument endorses; the second presents a situation that the argument contends must be changed if that goal is to be met in the foreseeable future.
    • 作者: lykuang02    时间: 2005-11-9 13:13

    Q17:未提炼过的olive油的质量并非是依照酸度来定义的,然后有实验表明单位体积内未提炼过的olive油含的oleic这种酸越少,olive油的质量越高.olive油含的oleic酸的比例可以用来精确评估这种油的酸度.


    所以，油质量和酸度的桥梁是某种酸在油中的比例来搭建的。


    结论是酸度仍然可以是定义olive油质量的指标。





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