第十一代紫色怪老头出的难题..请过招

76. Country Y uses its scarce foreign-exchange reserves to buy scrap iron for recycling into steel；Although the steel thus produced earns more foreign exchange than it costs，that policy is foolish；Country Y's own territory has vast deposits of iron ore，which can be mined with minimal expenditure of foreign exchange．

Which of the following，if true，provides the strongest support for Country Y's policy of buying scrap iron abroad?

(A)  The price of scrap iron on international markets rose significantly in 1987．

(B)  Country Y，s foreign—exchange reserves dropped significantly in 1987．

(C)  There is virtually no difference in quality between steel produced from scrap iron and that produced from iron ore．

(D)  Scrap iron is now used in the production of roughly half the steel used in the world today, and experts predict that scrap iron will be used even more extensively in the future．

(E)  Furnaces that process scrap iron can be built and operated in Country Y with substantially less foreign．exchange than can furnaces that process iron ore．

Ans: E

我想问
            为什么D错??

如果知道以后的需求量会变更大
            所以先买其他国的阿
            这样他国的用完后
            他还可以再用自己国的

看起来很合理吧??

53．There is a great deal of geographical variation in the frequency of many surgical procedures—up to tenfold variation per hundred thousand people among different areas in the numbers of hysterectomies, prostatectomies, and tonsillectomies．

To support a conclusion that much of the variation is due to unnecessary surgical procedures，it would be most important to establish which of the following?

(A)  A local board of review at each hospital examines the records of every operation to determine whether the surgical procedure was necessary．

(B)  The variation is unrelated to factors (other than the surgical procedures themselves) that influence the incidence of diseases for which surgery might be considered．

(C)  There are several categories of surgical procedure(other than hysterectomies， prostatectomies，and tonsillectomies)that are often performed unnecessarily．

(D)  For certain surgical procedures．it is difficult to determine after the operation whether the procedures were necessary or whether alternative treatment would have succeeded．

(E)  With respect to how often they are performed unnecessarily, hysterectomies，prostatectomies，and tonsillectomies are representative of surgical procedures in general．

Ans: B

我压根儿看不懂这题目在干嘛?? 谁可帮我解释一下
            

且
            为什么B对呢??B在说甚么啊??....汗…

76：如何解释这么傻的做法：自己外汇贮备少，又有资源，却偏偏上外面买？你自己想想什么原因呀，可能是技术还是设备或资金的问题？

A：更傻

B：更傻

C：不是文章考虑的问题

D：最大的迷惑项，可是没有针对性。

E：Furnaces that process scrap iron can be built and operated in Country Y with substantially less foreign exchange than can furnaces that process iron ore．具体解释了傻的行为背后的原因。估计此国属于第三世界国家啦，缺钱又少技术哈哈！

53:如果没有统一的标准就无法判断啦！估计兄弟身体不错，很少去医院吧！打个比方，你感冒啦，去A医院，给你吃点药。去B医院，验个血，挂点水。去C医院，先做个CT，再做个血液培养...

76看到B的選項就不用在看下去了，這是題直奔答案的題目。

結論說大部分的差異都是來自於不必要的surgecal procudure,問evaluate

就是要先排除他因造成這種variation,所以要先排除variation會受其他因素影響的可能。