slackening is influenced less by gov regulation than by another thing.

十位数调动总和会变，个位数调总和不会变

Think about it this way: x Difference between y and x is more than 5 so it is at least 6. But x is even and y is odd so their difference would be odd. Hence the diff between them will be at least 7.
Now z is greater than y by at least 2 (since z is odd too), hence diff between x and z is at least 9.

D. 主干变成了：(与environmentalists' proposals不同的是,) administration's proposal was a call. 错误

against concluding that the oceanographers' hypothesis is false，反驳他的假设是错的，就是支持他的假设

原文African American workers saw the need to join with White workers in seeking change despite White unionists' toleration of or support for racial discrimination.说明他们也知道被歧视，但不得不团结白人工人，E错误
However, recognizing employers' power over workers as a central factor in African Americans' economic marginalization, African American workers saw the need to join with White workers in seeking change despite White unionists' toleration of or support for racial discrimination. 当非裔美国工人意识到employers' power over workers是他们被经济边缘化的中心因素时，他们发现和白人工人一起联合起来寻求变革的必要性，尽管白人工人们歧视他们。C正确

”如果仅仅是为了避免设备的重复建设就在双州地区建造大型医院将会是对资源的浪费“
主语是duplication，D选项while表示转折或伴随，不表示因果

A. processes produce and make it (language) understandable，研究的是“产生语言和使语言可以让人理解的“过程
C. Language is produced and understood by processes. 语义不通，而且，一般说has not revealed ... but ......

A. 未在文中说出明，不能想当然
C. 当时流行的观点是warmblooded，而非intermediate type
D. 注意问法：作者对于这个caution的态度是什么，答案是这个caution小心谨慎的态度是合理的，因为的确有可能是intermediate type
E. C的工作中没有提及intermediate type

他因削弱，是education and job training导致经济增长

是deep relaxation产生psychological rewards as relief from stress

A. the finding is modified.错误
B. theory is rejected错误
C正确
D. 没有debate
E. 没有two schools of thought

逻辑链：P:因为新增工作数量比废除的工作数量更多，并且新增工作的平均工资比自从D上任之后的平均工资都要高->C:在D的任期内城市的平均工资收入越来来高
(D):废除的工作的平均收入和平均工资相当，可以增强结论。如果砍掉的工作普遍都是那种高薪工作那么就会削弱结论

disaster will be repeated, not forces
overlook 后边不直接跟that从句， usually, overlook the fact that ...

distinguish a from b

C
that was used in them ----wordy
strength steel has, and the timber-------should be another 'because' clause rather than a separated clause.

there is no...
Unlike Britain, there is ----不平行

一个句子使用Instead强调要做的是后面内容，使用Instead of强调要做的的是前面的内容（instead of的内容是实际上不会发生、不会做的，表达的是一种否定语气）。
简单说：Instead表达“而是要”，Instead of表达“而不是”
be eager to，raise to

题目要求找新证据反驳结论： 人类不是距今至少18,000你那之前从北边迁徙过来的，而是比这个时间要更晚。

A charcoal距今至少11400年，那也有可能更早啊，而且距今11400还是11200没有多大区别，也不是新证据。
B 又发现其他的campsite，无关
C 电脑模拟结果，无关
D 至少距今11400年以前有一条corridor连接了南北。新证据，人类可以通过这一条corridor从北边过来
E 只要冰川允许通行，人来就会怎样，但是没讲冰川什么时候允许通行，也有可能早于18000年前。

to help 与 to develop 并列