求助：求教og16版逻辑第86.116.117题

穆汐寒

求大神解答啊啊啊，主要是题目里的逻辑和解题思路O_o
菜鸟在此谢过╭(╯ε╰)╮

穆汐寒

86.  Scientists have modified feed corn genetically, increasing its resistance to insect
pests. Farmers who tried out the genetically modified corn last season applied less
insecticide to their corn fields and still got yields comparable to those they would
have gotten with ordinary corn. Ordinary corn seed, however, costs less, and what
these farmers saved on insecticide rarely exceeded their extra costs for seed.
Therefore, for most feed-corn farmers, switching to genetically modified seed
would be unlikely to increase profits.
Which of the following would it be most useful to know in order to evaluate the
argument?
(A) Whether there are insect pests that sometimes reduce feed-corn yields,
but against which commonly used insecticides and the genetic modification
are equally ineffective
(B) Whether the price that farmers receive for feed corn has remained
steady over the past few years
(C) Whether the insecticides typically used on feed corn tend to be more
expensive than insecticides typically used on other crops
(D) Whether most of the farmers who tried the genetically modified corn
last season applied more insecticide than was actually necessary
(E) Whether, for most farmers who plant feed corn, it is their most
profitable crop

穆汐寒

116.  The average hourly wage of television assemblers in Vernland has long been
significantly lower than that in neighboring Borodia. Since Borodia dropped all
tariffs on Vernlandian televisions three years ago, the number of televisions sold
annually in Borodia has not changed. However, recent statistics show a drop in the
number of television assemblers in Borodia. Therefore, updated trade statistics will
probably indicate that the number of televisions Borodia imports annually from
Vernland has increased.
Which of the following is an assumption on which the argument depends?
(A) The number of television assemblers in Vernland has increased by at
least as much as the number of television assemblers in Borodia has
decreased.
(B) Televisions assembled in Vernland have features that televisions
assembled in Borodia do not have.
(C) The average number of hours it takes a Borodian television assembler to
assemble a television has not decreased significantly during the past three
years.
(D) The number of televisions assembled annually in Vernland has
increased significantly during the past three years.
(E) The difference between the hourly wage of television assemblers in
Vernland and the hourly wage of television assemblers in Borodia is likely to
decrease in the next few years.


117.  Guidebook writer: I have visited hotels throughout the country and have noticed
that in those built before 1930 the quality of the original carpentry work is
generally superior to that in hotels built afterward. Clearly carpenters working on
hotels before 1930 typically worked with more skill, care, and effort than
carpenters who have worked on hotels built subsequently.
Which of the following, if true, most seriously weakens the guidebook writer’s
argument?
(A) The quality of original carpentry in hotels is generally far superior to the
quality of original carpentry in other structures, such as houses and stores.
(B) Hotels built since 1930 can generally accommodate more guests than
those built before 1930.
(C) The materials available to carpenters working before 1930 were not
significantly different in quality from the materials available to carpenters
working after 1930.
(D) The better the quality of original carpentry in a building, the less likely
that building is to fall into disuse and be demolished.
(E) The average length of apprenticeship for carpenters has declined
significantly since 1930.

emmahiggins09

穆汐寒 发表于 2016-4-8 13:43
86.  Scientists have modified feed corn genetically, increasing its resistance to insect
pests. Farm ...

这是评估题，用profit 的公式就可以解题了： profit = income - cost. cost

题里income 可以看成是yields, cost 可以看成是杀虫剂和买种子的钱。

profit for genetic = yields - 杀虫剂 - 买种子的钱
profit for ordinary = yields - 杀虫剂 - 买种子的钱

yields 是一样的，买种子的钱是Genetic大于Ordinary，所以决定的要素就在杀虫剂上了。

emmahiggins09

穆汐寒 发表于 2016-4-8 13:44
116.  The average hourly wage of television assemblers in Vernland has long been
significantly lower ...

116题是假设题:
B国电视机的年产量没有改变，但B国组装电视机的工人人数下降了，所以B国从V国进口电视机的量会增加。
结论是：所以B国从V国进口电视机的量会增加

要进口就说明B的产量下来了，下来的原因是工人人数减少了，所以有个前提就是工人的人均组装电视机的数量是没有改变的，所以人数少了才导致了总量下降。

要验证C，就把C 取非不支持结论就可以

emmahiggins09

穆汐寒 发表于 2016-4-8 13:44
116.  The average hourly wage of television assemblers in Vernland has long been
significantly lower ...

117. 已经有人回答过了，楼主可以参考下

http://forum.chasedream.com/thread-450708-1-1.html

穆汐寒

emmahiggins09 发表于 2016-4-9 06:13
117. 已经有人回答过了，楼主可以参考下

http://forum.chasedream.com/thread-450708-1-1.html ...

thanks~         

墨水火腿

emmahiggins09 发表于 2016-4-9 06:02
116题是假设题:
B国电视机的年产量没有改变，但B国组装电视机的工人人数下降了，所以B国从V国进口电视机 ...

墨水火腿

emmahiggins09 发表于 2016-4-9 06:02
116题是假设题:
B国电视机的年产量没有改变，但B国组装电视机的工人人数下降了，所以B国从V国进口电视机 ...

=。=懂了。。果然是我太水