FeiFei-112 的疑问 - ChaseDream

以下是引用dandan74在2003-10-14 5:50:00的发言：
112.    Older    United    States    automobiles    have    been    identified    as    contributing    disproportionately    to    global    air    pollution.    The    requirement    in    many    jurisdictions    that    automobiles    pass    emission-control    inspections    has    had    the    effect    of    taking    many    such    automobiles    out    of    service    in    the    United    States,    as    they    fail    inspection    and    their    owners    opt    to    buy    newer    automobiles.    Thus    the    burden    of    pollution    such    older    United    States    automobiles    contribute    to    the    global    atmosphere    will    be    gradually    reduced    over    the    next    decade.
Which    one    of    the    following,    if    true,    most    seriously    weakens    the    argument?
(A)    It    is    impossible    to    separate    the    air    of    one    country    or    jurisdiction    from    that    of    others.    Since    air    currents    circle    the    globe.
(B)    When    automobiles    that    are    now    new    become    older,    they    will,    because    of    a    design    change,    cause    less    air    pollution    than    older    automobiles    do    now.
(C)    The    number    of    jurisdictions    in    the    United    States    requiring    automobiles    to    pass    emission-control    inspections    is    no    longer    increasing.
(D)        原书上缺漏
(E)    Even    if    all    the    older    automobiles    in    the    United    States    were    retired    from    service,    air    pollution    from    United    States    automobiles    could    still    increase    if    the    total    number    of    automobiles    in    use    should    increase    significantly.
此题给的答案是C，请问如何分析?不是很明白此题的意思

I read this question before, the key seems to mean that used car market are flourishing.

C) The number of jurisdictions in the United States requiring automobiles to pass emission-control inspections is no longer increasing说明jurisdictions 即使对减少大气污染有过很显著的作用，现在这个作用已经大大减弱了------直接削弱了结论这种作用会gradually reduced over the next decade。

E) air pollution from United States automobiles could still increase if the total number of automobiles in use should increase significantly----我觉得有out of scope的感觉，不是在讨论jurisdiction 和atmosphere pollution之间的关系。

112. Older United States automobiles have been identified as contributing disproportionately to global air pollution. The requirement in many jurisdictions that automobiles pass emission-control inspections has had the effect of taking many such automobiles out of service in the United States, as they fail inspection and their owners opt to buy newer automobiles. Thus the burden of pollution such older United States automobiles contribute to the global atmosphere will be gradually reduced over the next decade.

A. It is impossible to separate the air of one country or jurisdiction from that of others, since air currents circle the globe.

B. When automobiles that are now new become older, they will, because of a design change, cause less air pollution than older automobiles do now.

C. There is a thriving market for used older Untied States automobiles that are exported to regions that have no emission-control regulations.

D. The number of jurisdictions in the United States requiring automobiles to pass emission-control inspections is no longer increasing.

E. Even if all the older automobiles in the United States were retired from service, air pollution from United States automobiles could still increase if the total number of automobiles in use should increase significantly.

The passage draws the conclusion that the share of pollution of such older US automobiles will be gradually reduced over the next 10 years. The simple reason provided is that these cars will be eliminated from the roads in the US. However, by pointing out that these cars will be used in other countries through a market exporting them to other regions, Choice C disproves the righteousness of the argument.

A, even if we cannot separate the air, it is still easy to calculate the quantity of pollution before emitting the pollution. A cannot weaken the conclusion.

B, the passage is talking about THAT part of pollution from old cars. B does not bear on the topic.

D, even if the number is not increasing, the old cars in those already passed will be put out of road. D does not weaken the conclusion.

E. The passage is focusing on THAT part of pollution from old cars. E does not bear on THAT part of pollution from old cars.

备注：此题目原来不全，补充版本也有误，现在第二次补充，依据是：LSAT Test-4-Section III-8

C There is a thriving market for used older Untied States automobiles that are exported to regions that have no emission-control regulations.