OG153 OG202

OG逻辑153，

153，Technological improvements and reduced equipment costs have made converting solar energy directly  into electricity far more cost-efficient in the last decade.However, 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 )is unchanged at thirty -fivr dollars.

Which of the following ,if true,does most to help explain why the increased cost-efficiency of solar power han not decreased its threshold of economic viability?

a,the cost of oil has fallen dramatically.

b,the reduction in the cost of solar-power equipment has occureed despite increased raw material costs for that equipment.

c,technological changes have increased the efficiency of oil-fired power plants

d,most electricity is generated by coal-fired or nuclear,rather than oil-fired,power plants

e,when the price of oil increases,reserves of oil not previously worth exploiting become economically viable.

怎么看都看不懂，请帮我把大概意思翻译下，谢谢

202题

Gortland has long been narrowly self-sufficient in both grian and meat.However, as per capita income in Gortland has risen toward the world average, per capita consumption of meat has also risen toward the world average,and it takes several pouns of grain to produce one pound of meat.There fore,since per capita income continues to rise,whereas domestic grain production will not increase,Gort land will soon have to import either grain or meat or both.

which of the following is an assumption on which the argument depends?

a,the total acreage devoted to grain production in Gortland will not decrease substantially.

b,the population of Gortland has remained relatively constant during the country's years of growing prosperity

c,the per capita consumption of meat in Gorland is roughly the same across all income levels.

d,in Gortland,neither meat nor grain is subject to government price controls

e,people in Gortland who increase their consumption of meat will not radically decrease their consumption of grain.

我始终认为B 要好于E，按照OG的解释，人口数量上涨了不回影响结论，但若人口减少了呢，那么就算每个人的消费都多了，也有可能导致消费下降，所以我认为人口数量首先保持不变是最重要的；如果这个前提变了，那么E 选项也就不能对原文起太大的作用了。请大家帮我分析下，谢谢大家

Since the health consequences and associated cost of not rejecting that one percent would be negligible,whereas the cost of maintaining the agency is not,the agency's cost  clearly outweighs the benefits it provides.

这是新东方补充材料上的一个逻辑题中的一段话，但我却理不请头绪，请教高人

我也认为202的B好；不明白E为什么对。因为如果人口减少，那么E不能加强推论。而B很明显是假设。