解题关键在bottom line上，在经济学中，bottom line专指净收益，意思等同于net income。根据原文reluctant to abandon this strategy despite its effect on the bottom line看出此处的effect应该是负面影响，也就是收益损失。知道这个意思后看选项哪个会对净收益产生负面影响。

read of 强调通过阅读了解熟悉

as as ABC就去掉了
前面有be 后面给are？
所以选了E

1. Joe studies more at night that he does during the day. (The sentence compares Joe to himself.)

2. Joe studies more at night than during the day. (The sentence compares "at night" to "during the day.")
A.this year and last. 都是副词比较是正确的
C. comparing expectations of this year and the last year's 比较对象错了

AD之间选，or可以平行 being 。。。 repressing 一样用与them
选D是因为后面a recognition of your own， 对应an empathy with

20 percent看后面的 所以hours 用 many
有than就要看到比较级
ABCD就能去掉了

be aiming to do / be aimed at doing (*be aimed to do* is wrong)

that 这个从句修饰了molecules, so use "play" rather than "plays"

from Manhattan:
Eliminate all the options with "they had anticipated" because they has no clear referent.
A,C and E are out.The fight remain between B and D.
D uses "unforseeable" which is an unidiomatic construction. To be concise more elaborate, I present these two sentences.
1. The fog is unable to be seen by the people ir The fog is incapable of being seen by people.
2. The fog cannot be seen by people.

B: try and recover
C: *uranium out of seawater* is wrong, suggesting that uranium, in big volumes, is kept in sea and it just need to be taken out from the sea. But actually uranium is processed out.
D: try for
E: *Recovering ... try to do* (redundant)

X can be as important as Y. X and Y can be equally important. But X cannot be equally important as Y
"Grasping," though not a verb, is more verb-like - an action rather than something one could possess. So "an understanding" and "grasping" are not parallel.

平行，A：an understanding of xxx is as xx as grasping 错误
B： they manager 不符合 错误
D an understanding of cultural norms is at least as important to them as grasping 我觉得还是平行的问题，them有没有指代模糊？
E Global managers working with overseas clients find an understanding of cultural norms to be equally important to grasping the pivotal business issues 还是平行问题

B选项：复数名词 20-foot-long implements和单数名词a bull rake在单复数上不匹配，由于两者上known as的关系，所以应单复数一致。

A选项：which引导的定语从句，Greek alphabet为先行词；其中itself作为Greek alphabet同位语；时态用过去完成时，与适应之前的字母相比，早一点；
B选项：adapting的主语将会是the Roman alphabet, 同时表现不出来时态上的过去的过去；
C选项：反身代词不能做主语；同时时态为现在时，无法表示过去的过去；
D选项：having...主语将是the Roman alphabet,与语义不符；
E选项：itself不能做主语，同时earlier位置不对，应该放在in the same century 之前；

我也认为解释有问题，B和D的的主语不应该是Roman alphabet吗？？？？

itself themselves不能做主语所以C错了

B是要看主语 发出的动作，这些都不是主动发出的所以不选B

Roman alphabet 从 Etruscan alphabet来，Etruscan alphabet从 a western Greek alphabet来 , a western Greek alphabet从the Phoenician alphabet来

要看是不是前后句的逻辑 究竟是谁伴随着谁

A选项：代词it的指代对象只能是名词而不能是一个句子或动词。但是在逻辑上，第一个英国的居住者做的事情应该是establish a permanent colony这件事，因此只能用did so而不能用did it。