求助OG-67 OG-117

sdcar2010

The key is the conclusion deals with "as a result of the operations of these industries." That is, using electricity as the power source would consume less fossil fuel. OPERATION has nothing to do with the original manufacture means or fuel consumption.

maratderk

也就是说这是个无关选项呗。谢了

sdcar2010

但是我觉得B不是更直接的说新的比旧的用FUEL少吗

-- by 会员 maratderk (2011/3/27 23:10:36)

The devil is in the details. B talks about fossil fuels used during the MANUFACTURE of the machine. The conclusion is about fossil fuels USED during the OPERATION of the machine in another factory. It is possible that there is no fossil fuel used during manufacture of a new machine, but the new machine made might be a gas guzzler during operation.

RayGT

B是说造用电的机器所用的油，比造用油的机器所用的油少。 但是机器有了之后的运作用油呢？这才是大头。

这题ETS的逻辑是这样的 （A-》B）：
把用油的改成用电的 -》 用的油就少了。

这个命题有个弱点就是电哪里来？电也要用油来产生。 比如说本来1单位油能生产一双袜子，现在改成用电的，1单位电能生产一双袜子，但产生1单位电要用2单位油，这样是不是用得油反而多了？ （这个弱点还可以出一题就是问你哪项削弱了论点）

选项E正好弥补了这个弱点。

maratderk

谢谢了