这里的倒装是因谓语部分is signed太短，因而为了突出主干而倒装。

插入语就近修饰

a number of是复数，the number of是单数

副词also和as well均表示“也”，其中一个必然是赘余的。

没注意到：介词短语 for the conveying of nutrients to bone cells应改为定语从句。这是因为，介词for身后是动名词短语，动名词是没有在语法上的逻辑主语的，例如，我们说，a bag for sleeping，这个词的意思是，睡袋。这完全不等同于a bag that sleeps（一个bag没法睡觉）。在本题语境下，tiny tubes必须是发出convey这个动作的施动者。

问x在-5的右边吗？即问 x>-5?
条件1：x>-7 但是是否大于-5不一定，比如-6 就小于-5 ；比如-4就大于-5 insufficient
条件2：-5

This option says climatic conditions have not changed. Because agriculture, cultivation require specific climate condition for each kind of crop, whatever ( wild wheat in this case ) HAS BEEN GROWING COULD HAVE GROWN AT THAT TIME (when cultivated wheat was found ) AT THAT LOCATION as well !
Even if you are not convinced, keep it aside coz neither is it irrelevant nor does it weaken.

choice (b) basically just says that wild emmer wheat can be domesticated. this is something we already know, since the wheat was domesticated by the ancient peoples!
the only knowledge added by choice (b) is the notion that the wild strain of wheat can be cultivated very quickly; this does not help us in any way in resolving the question at hand, which is to figure out the geographic location at which ancient people first domesticated the wheat.

好题，马克下

D confirms the idea that buses constitute the majority proportion of tourist traffic. Either way, this does not support the city's plan that parking will reduce bus pollution. Whether buses are 99% of all tourist traffic or 51%, this has no bearing on the fact that additional parking will reduce current pollution levels.

E： Some of the tour buses that are unable to find parking drive around Palitito while their passengers are visiting a site.
是文中的premise的一个变体，不是答案！

B的GHHbalong recognized这句对吗？木有连词

B的G.H.H alone recognized这个句子对吗？没有连词呀

Ron大神分析好厉害.....

the argument is saying that the ONLY WAY that seawater extraction will be commercially viable is if the cost of that extraction comes down.
to weaken the argument, then, you need to find ANOTHER way in which seawater extraction will be commercially viable, WITHOUT a cost reduction.

compliance with laws 与法律规定之间没有约束力

E 错误，不要质疑premise, premise “ This has hurt Tenare's tourism industry, which is second only to its fishing industry in annual revenues.” 是已知事实。

in any case, this is all a non-issue, because the formation of shungite is irrelevant.
the passage states that fullerenes were found in cracks inside the shungite, but that has no relationship to the formation of the shungite. for all we know, the shungite was already there for a billion years before the fullerenes formed inside it.

枚举推理吧？

碰到第一道黑脸题，做对了，单读选项好绕脑子啊，也耗时间