请教 og-153

ksay

刚看到ron大神上周在manhattan更新了这道题的解释。。。如果这道题的题眼确在ron大神指出的地方 怕是上面得各位大神们都想多了。。。

read the passage carefully: the conclusion is about "the price per barrel to which oil would have to rise (theoretically) in order for new solar power plants to be more economical".
therefore, we are thinking about a potential threshold price for oil at which something would happen. the current price of oil -- or, indeed, the current state of absolutely anything regarding oil -- is irrelevant, so you can strike choices a/c very quickly.

here's an analogy, if you don't understand:
let's say i'm looking at a pair of pants with a 32-inch waist.
if the passage discusses “the waist size i would have to reach to wear these pants”, then that is 32 inches, regardless of my current waist size (which is completely irrelevant).

shirryzhan

The threshold of economic viability for solar power (that is, the price per barrel to which oil would have to rise in order for new solar power plants to be more economical than new oil-fired power plants)--- means:The oil-fired power should have been more economical than solar power, but only if the oil rises to $35, the solar power could be more economical than oil power.


So we can tell, if the cost of solar power reduces, which means solar power is more economically viable, the threshold of economic viability should be lower, maybe to $30, because oil price doesn’t need to make so much sacrifice for solar power’s success. However, the threshold is still $35, it means that the oil power at the same time also gets more efficient. In a conclusion, oil price still need to make such a big sacrifice - % 35, to help keep solar power's economic viability.