做题的时候在BC里纠结了一下，其实B错的还是很明显的
把and之后的部分对应到前面发现没有主语可以连接 jacket's stinger并不能can use it...
至于DE：Ron：
"Whereas" already implies that you're drawing a contrast between two different situations. So, "whereas" + "in comparison" = redundant.

AB中的it非常的ambiguous

(C) When Henry VIII's ship Mary Rose, which sank in 1545, was recovered in 1982, archaeologists found more than 17,000 artifacts on board,
选项错了8

and, if a partner and i are going over the terms of a contract and we reach a mutually acceptable compromise, then we agree ON that compromise (and, in this case, "agree with" and "agree to" are wrong).

if i have the same opinion as person X does, then i agree WITH person X (and, in this situation, "agree on" and "agree to" are wrong).
on the other hand, if someone with power over me, such as an employer, offers thing Y and i accept it, then i agree TO thing Y (and, in this situation, "agree with" and "agree on" are wrong).

the example given in the book is "X is a means to Y", which means that X is some action that can be used in an attempt to attain condition Y.
the example given here is "Y can be done by means of X", which means that X is a way of accomplishing whatever Y is.
these are unrelated.

if you're still having trouble seeing the ambiguity here, consider the following:
Use this door only after 5pm.

interpretation #1:
Use this door only after 5pm (i.e., don't use any other doors after 5pm)

interpretation #2:
Use this door only after 5pm (i.e., don't use this door until 5pm)

possible interpretation #2:
contact with the latter directly through...
i.e., we are not sure whether the actual contact is direct, but the dream experience is the only channel of transmission.

C:Ron
possible interpretation #1:
contact with the latter directly through...
i.e., the contact is what is direct; the dream experience is just a conduit. in this interpretation, "through" is not used with directly; therefore, it's possible, in this interpretation, that the dream experience is only one of a number of consecutive channels through which contact is achieved.

"Due to" does modify nouns, but it's typically used after the verb "to be."
For example, "His team's win today was due to better conditioning."

再说说关于C选的一点想法。倒推一下，如果C是对的，过去的补位商场和倒闭商场是同一种商业模式，说明啥呢？说明商业模式不是导致商场倒闭的原因，也就是说，不应该是折扣店抢了非折扣店的生意，应该是非折扣店自己玩脱了。而我们要证明的是，就是因为折扣店抢了商业街的生意从而导致商业街无法翻身了。

tend to do sth.

"if [participle]" -- a modifier that, by convention, refers to the SUBJECT of the sentence (not the proximate noun).
for instance:
Animal 1 will attack animal 2 if injected with enough of the hormones related to aggression.
--> in this sentence it is animal 1, not animal 2, that is being injected with hormones.

一定一定要找到作者真正最想让平行的两个内容
一定一定要正确识别插入语这个东西！！

it只是形式主语

介词短语只能跟介词短语平行。A中who was a jazz pianist and composer是非限定性定语从句，其会让人读者认为Thelonious Monk仅在过去（was）是爵士乐钢琴家和作曲家。但在逻辑上，显然Thelonious Monk其实一直是钢琴家和作曲家，即，应该用同位语a jazz pianist and composer而不该用定语从句。
非限制性定语从句与限制性定语从句区别。

条件给出b、c都是大于零的数！

四种字母的：第一个字母有26中可能性，第二、第三、第四同理，乘法法则，所以为26^4
五种字母的同理：26^5
两种可能性相加

第一小题supermarket D不就是反例嘛？人均年龄35.1在35和40之间，可是less than 10 items的人数是5，大于平均3.5

看两边共10有几次方，然后刨去24X10，剩下的10的n次方变成100的m次方即可