求助一道题！

houyunzhe1734

If the airspace around centrally located airports were restricted to commercial airliners and only those private planes equipped with radar, most of the private-plane traffic would be forced to sue outlying airfields. Such a reduction in the amount of private-plane traffic would reduce the risk of midair collision around the centrally located airports.

The conclusion draw in the first sentence depends on which of the following assumptions?

(a)Outlying airfields would be as convenient as centrally located airports for most pilots of private planes.

(b)Most outlying airfields are not equipped to handle commercial-airline traffic.

(c)Most private planes that use centrally located airports are not equipped with radar.

(d)Commercial airliners are at greater risk of becoming involved in midair collisions than are private planes.
(e)A reduction in the risk of midair collision would eventually lead to increases in commercial-airline traffic.


这道题的答案是C，但是我理解不了C选项是怎么填补第一个结论的GAP的，望高人指点，感谢！

小仙女rachel

tiny106 发表于 2013-1-6 16:21
恩？C的意思是说现在大部分的私人飞机都没有雷达。 什么时候有不导致事故的意思了？没错啊，结论的意思就是 ...

你这解释不对

tiny106

ooo~~那个restricted to commercial什么什么的意思是说这个机场只给商用灰机和有雷达的灰机使用吗~ 这样的话我就能理解了。

-- by 会员 houyunzhe1734 (2013/1/7 9:25:32)

是的，就是这个意思。

lxsyt1314

亲，tiny解释很到位····我把你误导了···sorry

lxsyt1314

谢谢tiny的解释~~~我懂了~~~最近做逻辑觉得总是不对劲，原来是意思自己臆想了~~~误导别人了······

houyunzhe1734

ooo~~那个restricted to commercial什么什么的意思是说这个机场只给商用灰机和有雷达的灰机使用吗~ 这样的话我就能理解了。

zmf214

题目是：如果只让商用飞机和装雷达的私人机停在中心区，那么绝大多数的私人机就要停到远机位了。
所以中间的假设就是，绝大多数私人飞机是没有雷达的，即，被限制进入中心区，只能停到远机位的。

tiny106

恩？C的意思是说现在大部分的私人飞机都没有雷达。 什么时候有不导致事故的意思了？
没错啊，结论的意思就是说要限制机场只给商用飞机和带雷达私人飞机使用。

houyunzhe1734

呜呜，不太明白还是，既然C说大部分的私人灰机木有雷达，即不会导致事故，那也就不用outlying the airport了呀~ 这样不是削弱了么

houyunzhe1734

不是说限制商用灰机和带雷达的灰机么~