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.
C.No fuel other than natural gas is expected to be used as a replacement for oil in Siduria.
I think the answer should be A.If consumption is getting much more quicker thatn the production.Imported fule would be necessary again.
In your opinion ,you said if we can find sth in S that could be used to replace the oil ,it will be a great news for S since there will be another fuel could be used to compelement the fuel consumption.The foreign source for fuel will decline soon for sure.
In your logical inference ,you said that if new fuel found ,it must be a fuel which will be cetain to rely on import in the future.How could you get such conclusion?
D.Buildings cannot be heated (by solar energy) rather than (by oil or natural gas).
想问一下,这个句子的意思,偶对这种否定的rather than不太清楚,无论是否定句还是肯定句,把rather than当成一个not,是不是就对了。这句的意思是不是,Buildings cannot be heated by solar energy. Buildings can be heated by oil or natural gas. 请NN确认一下啊,谢谢啦。