【每日逻辑练习第二季【2-4】

jessie92730

【offer大冒险】2-4
精练
BG: today’s continents were part of a single huge landmass
P: the mass broke apart and ocean water filled in
C: South America was once with the west coast of Africa
加强
猜测答案：south America 和Africa 发现很多相同的动植物化石
答案：A

逻辑链
1.        BG: BH & T similar, BH is accused
P: BH was completed moth before T
C: the accusation is without merit
增强
猜测答案：T被发现有明显证据抄袭了BH
答案：B

2．BG：herbicide cause the death of partridge
   P: no trace of herbicide in the body of partridge
   C: herbicide is not the reason
   削弱
   猜测答案：herbicide进入机体后无法被检测
   答案：D A（纠结在是不是一定herbicide poisoned，其实只要是由于herbicide导致的就算~）
   
3  C

4 BG：SV40 is the reason because no SV40 in the healthy tissue
  P: vaccine was contaminated with the virus SV40
  C: this vaccine was the source of the virus
加强 答案：E

stellagee

【offer大冒险】2-4
精练
According to the theory of continental drift, in
prehistoric times, many of today’s separate
continents were part of a single huge landmass.
A

10.P1: some similarities exit
P2: All production work on The Big Heist was actually completed months before Thieves was released.
C:The accusation is wrong.
选B
11.BG: In Britain, partridge populations have been steadily decreasing since herbicide use became widespread.
P: tests show no more than trace quantities of herbicides in partridges on herbicide-treated land.
C: something other than herbicide use must be responsible for the population decrease.
猜测：粘上农药的P都死光了（真能猜呀==）
选A(农药使鸟能吃的虫子减少，虽然不是毒死，但是也与农药有关--削弱）

12.C

13.错选D-->E  加强
D:一小部分M没有显示是由asbestos引起的
E：在finland，此处的PV没被污染，M的样本不含有SV40
是明确的逆否命题，用没有污染的vaccine，mesotheliomas里就没有SV4O，反证了“mesotheliomas中的SV40来自vaccine”
BG：SV40 virus cause M
P： in 1960 some polio vaccine was contaminated with the virus
C: The vaccine was the source of the virus found in M decades later.

sakurasong

AAACC
ABACE

2
BG: characters and plot twists in BH are similat to those in T
P1: T studio accuse the diretor of taking ideas.
C: All producation work on BH was completed before T was released
A: BH and T are similar have paralles in earlier filmes

5.
BG: Infection by SV40 virsus is believed to be a contributing cause of M
P1: in US 60% of tissue samples from M contain sv40.
P2: some vaccine was contaminated with SV40
C: this vaccine was the source of M later
A: in F, where vaccine was never contaminated, samples from M do not contain SV40