rc
第一段有时候会透露出主旨结论---->和最后一段呼应
“But discoveries of the three-million-year- old fossilized remains of our hominid ancestor Australopithecus have yielded substantial anatomical evidence that upright walking appeared prior to the dramatic enlargement of the brain and the development of stone tools.”

rc
tricky，错选d
But when the energy coming from the galactic center is compared to （widely held predictions ）（based on how much matter should be falling into a theoretical central black hole,） there is a discrepancy by a factor of a few thousand.
对比的是energy，而不是“how much matter should be falling into 。。。”，这里容易只看后面basedon的解释就去选，一般重复文中句子的，都不是正确选项，gmac很tricky。
这类题不难但是很容易错，要记住这道陷阱题，多加思考，不要看到长得像就去选。

many times as rare as错误

rc
错选c以及没有读懂d
C选项：The passage lacks any infomation indicating J's personal view of Pierre. Given the information in the passage, it is entirely possible that J nver even read Pierre.
文章没说a novel that was thought by James，虽然大意对，但是这个细节错。无中生有

cr
解释题。政府为了刺激棉花涨价给农民补贴（财政支出增加），但结果要保证no net burden on the budget，所以这个决策必须带来财政收入。只有A提到了收入：棉花价格低政府税收就会减少，而现在通过减产价格涨了，税收就会增加。可以解释

cr
重点一定要仔细看结论句 However, in other industries new-product development continues despite high development costs, a fact that indicates that the extension is unnecessary.
argument对比的是other industry 和 医药industry

读懂题干！削弱budget-deficit对discrepancy的解释！
discrepancy是指为什么manufacturing的productivity增长了，而service sector的productivity下降。budget的explanation是说因为interest rate的上升导致的，第三段第一句说道利率越低，投资越好，productivity就高，而现在service sector的productivity低就是因为利率高造成的。E选项正确在于，它说道利率贵manufacturing和service sector的影响是一样的，也就是不会出现一个growth了另一个却decline，就weaken了budget这个解释

cr
assumption题
more effective 出现在结论而没有出现在premise，那么它肯定会出现在正确选项

cr
没有理解题意
But that prediction would not have adversely affected the dollar （had it not been for the government's huge budget deficit）结论认为是deficit造成的dollar贬值
h a d it not been for, 要不是
要不是财政赤字，prediction不会造成货币贬值
d选项，budget deficit之前，prediction频繁造成货币贬值

cr
根据 结论“Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.”
很多被ticket的都是equip的，-》得出结论，equip的比不equip的超速更加频繁---注意这里多了频繁一词的定性----也就是结论中出现了regularly，而premise没有---那么这种，正确选项必定是有regularly的---

结论出现而premise没出现，结论没出现而premise出现的词，一般都会出现的正确选项中-----> assumption的题做法

another的用法解释一下呗？

D哪里错了？？

cr--对比选最优
E：although the proportions of accidents is small, SA may still have a greater accident rate than AD. thus his conclusion still holds, AD is safer。所以E 并不能削弱该选项。
还是得对比选出最优的，be，b道出了 整体不安全不代表某条航线不安全，给出了不安全的原因以及航线相对安全的原因

cr
C still show traces of the virus.疫苗中仍然有病毒的痕迹 残留，
原文前提已经说了 however, in 1960 some polio vaccine was contaminated with the virus.病毒被感染了，
重复前提，没用，不能加强前提
说明where the polio vaccine was never contaminated, samples from mesotheliomas do not contain SV40. 没有vaccine的地方就没有sv40，这个可以加强

cr
C still show traces of the virus.疫苗中仍然有病毒的痕迹 残留，
原文前提已经说了 however, in 1960 some polio vaccine was contaminated with the virus.病毒被感染了，
重复前提，没用，不能加强前提

cr
又选错了b
b是重复了前提句：---注意这种重复前提的错误
This year, previously established companies will not be adding as many new jobs overall as such companies added last year.
。。

cr
linger 磨蹭

啥玩意儿啊

只有e 提到了dissatisfaction和self control 的关系

c项是同位语 仅修饰900m 不是part of a deal the purchase才是
d项要用to make 后面的it要改为itself 因为主语仍然是it