GWD6-Q4

anzhiying

GWD6-Q4:   assumption

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?

 

1. In Siduria the rate of fuel consumption is rising no more quickly than the rate of fuel production.
2. Domestic production of natural gas is rising faster than is domestic production of oil in Siduria.
3. No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.
4. Buildings cannot be heated by solar energy rather than by oil or natural gas.
5. All new homes that are being built will have natural-gas-burning heating systems.

为什么选A，不是已经说了Siduria already produces more natural gas each year than it burns，A算重复已知吗

anzhiying

顶顶

pipopipo0939

A项说的是油的消耗量啊

原文只说了天然气（natural gas）的产量比使用量多，油田的产量 increasing at a steady pace

如果油的consumption比油田的产量增长的快，那么oil还是不够用，还要依赖外国啊。

A项没有重复

希望能帮到你~

flyingbunny

A 说的是rate，不是实际的产量跟消耗量。
如果消耗量的基数大，就算 rate 小，实际增加的消耗量还是大。

yangguangxi

LS的朋友 我觉得此处的rate是速度的意思 不是比例
要是比例的话那么基数分别是什么呢 而且这样反而解释不通了
要不你再想想 我觉得2楼的解释是比较合理的 呵呵

10gmat

我觉得是这样的：因为前面只说了石油和天然气的消耗，但是结论是说整个燃料的消耗，中间有GAP，即所有燃料的消耗量必须与天然气和石油的特征一样才能有此结论---生产量大于消耗量.

桃子教主

关键点是不要被Siduria recently implemented a program to convert heating systems from oil to natural gas.这句话迷惑。。。
短期。长期?
如果nature gas的消耗量远远大于oil的话，oil就可忽略不计了。
还是觉得此题逻辑不是很严密。。个人观点