从原句语义可以判断正确的平行结构是：”high wheels“ and" a floor"，在D和E之间犹豫了一下，没有关注到两句的差别：curved的时态和代词they 、it的指代是否清晰~

圆周：2*4*π=8π
已知：弧线RTU长度为4/3π
4/3π ÷8π=1/6
1/6*360°=60°
因此圆心，R点，U点组成等边三角形，线段RU=r=4

B和D因为as后面不能加介词排除，e后面的those没必要，不能是bone是those of遗骸

这题我可以排除CDE，关键卡在了AB，明明知道rise higer是累赘，但是觉得A的they指代不清，所以选了B。其实they在文中既可以指代prices，也可以指代refiners，按逻辑来讲是可以理解成prices的，没有硬伤。我局限在它只能就近指代refiners了，所以觉得应该用did而不是were。正确选项是认可了they指代prices

"examples of neurogenesis include" - so the examples should lead off with whatever the actual thing is that indicated neurogenesis. The mice aren't the example - the example is the brain growth. That eliminates B and C. A also breaks parallelism.

And the other thing wrong with A, B, C and D is "when placed in a stimulating environment" - it sounds like they are referring only to the time that the mice are in the stimulating environment - but the brain growth is permanent. It doesn't shrink back down once the mice are no longer in the stimulating environment. Ditto for the increase in neurons in the canaries.

CHOICE E：“the brain growth in mice" ---"an increase in neurons in canaries" 平行，，找核心词 “growth” --- "increase"

错选C，C是两个人都同意的观点

理解题目意思：抽出一张卡片，卡片上的数字为x，（x*x+1）始终在15，200之间。

which不能修饰整个句子！

感觉b里面的that try也有问题，try的发出者不能是innitiative应该是company

CHOICE A-run-on
CHOICE CDE- 'scale of' doesn't make sense
CHOICE C- you can't say 'each that had...' (can't follow 'each' with a relative pronoun - if you're going to use a relative pronoun, it has to come directly after the thing it's trying to modify)
CHOICE CE- no justification for using the past perfect ('had been') - that verb, if there's a verb there at all, should be in the simple past (the same tense as everything else in the sentence, because everything described in the sentence is contemporaneous)
CHOICE CE- it doesn't make sense to use 'each' AFTER the comma, because it's not true that each structure was connected with a road system. instead, the road system connected all of the structures with each other, which is nowhere close to the same thing. (having 'each' BEFORE the comma makes sense, because it's actually true that each of the structures comprised up to 600 rooms.)

错选B：不需要考虑政府的总债务，仅需考虑the debt accumulated in acquiring and storing it.
E错的原因：不需要考虑closing之后的成本，因为题干问的是by selling the helium.

提供了一个衡量标准（衡量人类活动对鲑鱼gene flow的影响）——他们没有qualiative difference

1973 to 1993, during which 会导致which引导的定语从句优先修饰1993，然而应该修饰整个时期，用an era during which会更合适

先快速定位discrepancy的位置与具体内容：physicians believe... requirements prevent them from spending enough time with patients ; VS "average time a patient spends with a physician during a visit has actually increased";
结合材料中提到的require physiscians to document their decisions, 发现B选项内容接近

B选项错的原因是no known... that indicate the structure of those dinosaurs' lung是原文中没给出的内容，原文说could not have evolved the complex lungs，选项过度解读了

1. scale of structure make no sense , "scale of 1 to 10" is ok 排除cde
2.a 两个动词之间没有连词 排除a

正确选项A的意思是：作者没有充足的评估是否取消这个禁令之后的影响——Pat认为工资上涨有改善状况，原因是很少的人讲课教书，但他是建立在认为ban对他们讲课教书的意愿影响较低的情况做出的猜测——实际上取消了禁令后可能会有很多人参与讲课教书

on the amount of sales over (注意这个over，说明只考虑超过这个数额的部分)

the core of the sentence is
“a bird has colors.“
both 'found in the philippines'** and 'resembling a hummingbird' are modifiers. they use somewhat different specific verb forms—but they both modify the same thing, and so they're parallel.

C: The comparison is cooking vs. taking: cooking spices vs. taking spices (for medicinal use). That's okay. The issue is that we can't say "taking spices is done in large quantities..."
E: that's wrong, because it's not the usage that's in small quantities; it's the spices themselves. (the sentence allows the possibility that the spices are used all the time - as long as the quantities are small.)