一定要看完所有选项，如果能看到E选项，这道题就不会错。。。

要仔细读题....in that the Sonoran cacti
问的是沙漠里的这个植物有什么不一样的特点

Woody found that educational opportunities increased for both girls and boys around 1750. Pointing to “An Essay on Woman” (1753) as reflecting a shift in view
Thomas指出了 “An Essay on Woman”反映了观念的转变

a为什么不对？文章中有说到Examining newspaper advertisements for academies,

It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.

Hoping to participate in the traditional American ethos of individual success

when a perceptible gap arises between a culture's expectations and the reality of that culture, the resulting tension can inspire a revitalization movement

最后一段及最后一句话：Garvey did not create this consciousness; rather, he gave this consciousness its political expression.
提供了C选项的信息

，两个事件之间应是因果关系而不是并列关系。（伴随状语可以表达因果关系）

这个scholar的argument实际上就只是这一句话：Some scholars have argued that Garvey created the consciousness from which he built, in the 1920s, the largest revitalization movement in African American history.
然后这道题就要从这句话中推断，真的很难，，，

Ron：in the construction "it is (adjective) for XXXX to (verb)", the adjective describes what XXXX experience(s) in trying to (verb).
e.g.，This book is hard for me to read. (I experience difficulty in reading this book.) so, choice E is saying that the appliances themselves have to spend a lot of money "to be bought on credit". well, that doesn't make any sense.
https://www.manhattanprep.com/gmat/forums/noting-that-the-federal-reserve-had-raised-t23862-15.html

?文中都没有说道teeth 啊

sole 唯一的
virtue was to be instilled not only by churches and schools, but by families, where the mother’s role was crucial.

注意提问“brighter ” 比较级，答案也应该是比较级的。
pigments 颜料染料色素

看清楚问的是insect，不是plant，想成plant了

fitness 适当适合健康
重点“bright carotenoidbased coloration” 没有仔细读文章啊

Studies of several animal species have shown that when choosing mates, females prefer males with brighter carotenoid-based coloration.

conduct应该为conducting才能做后置定语，因此只能是定语从句

表示“美国的贸易赤字”不是应该说the United States' trade deficit么？A选项是不是少了一个撇？

我觉得这个题有bug，B应该比D更贴切。
因为B说明了这个来自natrue的F物质也许根本就不是地球自己生成的，而是由于外星陨石撞到地球才出现在地球上的。所以F物质的形成和地壳根本就没有什么关系。
至于D，说自然生成的F有着以前不知道的晶体结构。但，以前知不知道和这道题有什么关系？科学家在搞明白这个F物质的结构，从而可以在实验室人工合成之前，不也是不知道这个F物质的结构么？也许这个F物质本身就能有千万种不同的结构来存在呢？不管以哪种结构存在，不都是F物质么，物质本身又没有变。 D成立的条件是基于一个 “结构不同，需要的压力和温度条件就不同” 的假设的。它预设了这样一个前提，而题干里面完全没有没有信息可以证明这个前提存在。
所以综上 我觉得B的逻辑更加清晰和有效。因为他直接提供了一个F物质可能根本就不是在地球上形成的证据。