快被气哭了，不能让这道题打倒人类！

mrsyue

Q4:

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.

    E.   All new homes that are being built will have natural-gas-burning heating systems

答案是B, 我选了A, 到底那里不对呢？请哪位大侠帮忙讲讲！

mxf288

应该是A.

lawyer_1

答案是A，讨论过。

robertchu

try 搜索 on this board.

looook

应该是A

xyl927

I chose A. I thought I did the question wrong at the beginning.