总结了一下：
a 1.which定语从句只能就近修饰（这里的就近修饰最多可以跳过介宾），但它应该修饰的不是 food processors，而是high-speed electrical gadgets。（虽然such as是插入语，但是which也不能跳跃修饰，ron讲过中间有插入语这种，which离得太远也不能选）
2. as...as结构之间只能是adj./adv.不能是n
b 1.which修饰错误同A
2.such as错误，原句的意思是厨房的gadgets造成的伤害和工业机器造成的伤害一样严重，对比的是伤害程度，而B用工业机器造成的伤害来举例说明gadgets造成的严重伤害，导致对比的是伤害的种类（those指代injuries），既改变了原句的意思也不合逻辑
c that错，that是单数指代，前面没有单数名词
d that错同C

请问下C选项，问题问的是削弱呀，为什么不能是答案？

D选项，部分代表了总体，不能说明任何问题

sickness sleeping on the job fatigue among shift workers 三个是并列的 错选D 因为 sickness, sleeping on the job 中间是逗号 不是 and

1. descend 表示是什么的后裔 应该被动 主动用法表示下降 沦落
2. 第一个内容是客观事实 后一个内容是历史事件

果推因反驳，到底是social contact影响mental还是mental影响social。所以全文最有用的就是最后一句话，前面都不用看了，跪了，想了半天

关于do的位置，Ron解释过：
如果只有一个名词，没有修饰成分，在平行结构的后半句，可以把helping verb（do / does）放在名词的前面或者后面
例
than my brother does. --> correct （preferred）
than does my brother. --> correct
如果在平行结构的后半部分，名词后面（注意是后面）跟着修饰成分，则必须！把do / does 放在名词之前
例
than my brother, who has never studied literature, does. --> F
than does my brother, who has never studied literature,. --> T
此题不受这个规则影响

D选项，患有哮喘的小孩被建议练习游泳，他们长大后成为运动员从而使得得哮喘的运动员的比例增加，污染了样本。脑洞太大理解不能。
C选项：运动员比非运动员患上哮喘的几率低，运动员在chlorine中暴露时间肯定要比常人长，反而没得哮喘不是很直接的削弱吗？

又是regularly这个词。。。

the main problem with option B is the article "a"

aspirin prevents blood clots just as well as does a commonly used and a more expensive blood-thinning drug
the second "a" kind of implies that there are two drugs rather than one.

E说明了医生会受到病人影响。

the real problems with choice a:
- 'the ratio of 42 times' is redundant; it'd be good enough just to say '42 times'. note that the word 'ratio' is not redundant in choices c-d, since it's being used as a modifier to make a logical connection.
- it doesn't say 42 times what. not only is that unacceptably vague, but it also breaks parallelism.

as compared to~~

注意其他几个选项中，前后对比的成分

it was said that 的that可以省略，特别是对于此句，前面已经出现了that，xxx was so prevalent THAT it was said THAT 这样会显得awfully ugly

decimated vt.大批杀害
A that has中的has不对——改have
B by which是被动语态，应该成were decimated
C are decimated时态不对，which不能修饰人，逻辑语意也不对
D 同C错一样

their life cycle，its life cycles，单复数都有点问题

如果说c选项是通勤者们应对方案的方法，和方案本身的属性无关。那么D选项20%的通勤者换了线路不也是通勤者应对方案的方法吗？为什么这个就有关了呢？

C: more likely... should be followed by "than"
E: as likely... as is correct

B more than 的位置引起歧义，
Is the dollar coin being used more as a substitute for four quarter than for the dollar bill, or is the dollar coin being used more than the dollar bill as a substitute for four quarters? “更多的是作为four quarter的替代” 还是 “作为four quarter 的替代用的比the dollar bill 多”