In the past the country of Siduria has relied heavily on imported oil. Siduria recently implemented a program to convert heating systems from oil to natural gas. Siduria already produces more natural gas each year than it burns, and oil production in Sidurian oil fields is increasing at a steady pace. If these trends in fuel production and usage continue, therefore, Sidurian reliance on foreign sources for fuel should decline soon.
Which of the following is an assumption on which the argument depends?
In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production.
Domestic production of natural gas is rising faster than is domestic production of oil in Siduria.
No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.
Buildings cannot be heated by solar energy rather than by oil or natural gas.
All new homes that are being built will have natural-gas-burning heating systems.
取非削弱,弄清选项的主语是哪个
fuel 燃料
oil 石油 gas 天然气
燃料包括石油和天然气(fuel=oil+gas+...)
P:oil and gas的产量都在增加,且gas的产量比使用还多
C:S过不需要再进口任何燃料
A 取非S国燃料消耗比燃料生产更快-->削弱
读比较结构的时候先提两边的对象!!
C other than 除...以外
自己先想一下gap是什么!
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相当于方案推理
方案:usage and trends in fuel production
目的:reliance on foreign sources for fuel should decline soon
A:在锡杜里亚,燃料消耗量的增长并不比燃料产量的增长快。
直接提到总fuel消耗和产量的供需变化,最综合!其他选项要么片面,要么无关
相当于方案推理
方案:usage and trends in fuel production
目的:reliance on foreign sources for fuel should decline soon
A:在锡杜里亚,燃料消耗量的增长并不比燃料产量的增长快。
直接提到总fuel消耗和产量的供需变化,最综合!其他选项要么片面,要么无关
A 完美的解释了所有fuel的消费量不会大于所有fuel的生产量
Use negation method:
a) In Siduria the rate of fuel consumption is rising MORE quickly than the rate of fuel production -> negate the conclusion ( production cannot catch up the demand)
b) Domestic production of natural gas is NOT rising faster than is domestic production of oil in Siduria. (Doens't matter, and if oil production increase, it would actually require less import)
c) FUEL other than natural gas is expected to be used as a replacement for oil in Siduria. (Irrelevant. and if it is, require less import)
d) Buildings CAN be heated by solar energy rather than by oil or natural gas.(Irrelevant, and if it is , less import of oil required)
e) All new homes that are being built will NOT have natural-gas-burning heating systems. ( Irrelevant, how many new homes are there that will affect the total consumption of oil?, the oil consumption by this new homes might remain the same)
S用进口油,gas产多于用,想从oil转gas。则对进口燃料的需求少。
A. S的燃料耗慢于产 → √
B. 国内gas和oil对比,无意义
C. 文章重点在用国内资源而非国外资源上
D/E. irrelative
国内的oil和natural gas产量都在上升,可以使国家摆脱对进口energy的依赖。
CQ1. 国内的fuel能不能用
CQ2. 国内的需求会不会上升得更快?
和其他energy,生产速度都没有关系
D哪里错了??
目的是要减少对对进口fuel的依赖,特别是首句关注的fuel是oil。
现在的情况是在heating上对fuel的需求已经开始从oil转为gas,且gas供给有余;oil的供给也在稳步上升。
关键就在于,对oil的需求会不会增长过快(比如除heating还有其他需要oil的地方)
这个国家把heating system从使用oil转成了使用gas,这而gas的供应每年都是能满足需求的,现在看起来,加上这部分从oil转过来的gas需求后,gas是否仍然是供应充足的;
而对于oil,由于oil需求的减少,而oil的产出又在不断增加,现在看起来,oil的供应也是充足的;
我们只需要选一个选项,保证其逻辑不出错即可,a选项是对的
Siduria最近将供热系统从石头调整到天然气。目前天然气已经是生产比消耗多,并且石油的生产在稳定增长。如果这个形式稳定下去,那么S对于进口燃料的依赖会降低。问assume
choice a, fuel消耗不会比fuel生产更加快。correct。题干只说了目前天然气供大于求,但不知道石油是不是,fuel包括了天然气和石油
these fuel production trends仅包括oil production 和natural gas production
fuel usage仅包括natural gas usage
而结论是sources for fuel,所有sources
范围扩大了
与OG18-636对比
【笔记】看清楚文章的结论 - 减少对外部进口能源的依赖,也就是消耗增长低于国内生产增长才是最关键的。其它讯息都是干扰项目。
目的在于降低对国外资源依赖,而不是推广天然气使用
逻辑题要承认前提是正确的,本文前提是S国天然气已经生产大于消耗,石油生产量稳定提高,结论是S国以后对外国进口能源依赖下降。A对,B之说天然气和石油生产速度,没说消耗,C和D都没有在前提范围里。
A不是削弱么
进口与否取决于国内需求以及国内产量之间的关系
对A取非,如果消耗大于生产,还是要进口