方案的核心在于“卖”，和卖不卖的出去相关的为正确答案

题目有误：应改为（2）S^2>220

题目说PQ两点都在这个图形上

A like the one , 对比了inhabitant
B
C Loch Ness's monster is an inland lake
D monster和inhabitants
E that live in Loch ness 和 inhabitants

the correct comparison as much . . . as.
Problem with B - resulting in wood now costing eight times as much to collect and distribute as in 1960 ----wrong comparison.

cedar比steel和timber frame 的强度大，有joints and nails，cedar很灵活
既然是这样DE就去掉，因为变成了timber frame incorporates。
然后C的 steel has 应该是steel does B里面的used in them的them要找很远才能找到buildlings

体会C选项带来的歧义

After coma, “wings” is required because pronoun “them” is present towards the end of the sentence.
For pronoun “them” a clear antecedent is needed. This antecedent will be “wings” which must be placed after coma.
Hence, A, C, and D are incorrect. Moreover in C, instead of adverbs (smoothly and perfectly) adjectives (smooth and perfect) have been used.
Furthermore in D, “smooth and perfect manner” mean “smoothly and perfectly” hence, D is wordier by one word than the sentence was required.

If what immediately follows not only is a verb phrase, then what immediately follows but also must also be a verb phrase. And so on. The sentence here correctly uses the not only . . . but also . . . construction: what immediately follows not only is a verb phrase (disputed the common notion . . . ), and what immediately follows but also (questioned whether he drank at all) is a verb phrase as well.

All the possible answer choices here use the construction not only . . . but also . . . We can easily eliminate the choices that use the construction inappropriately. The construction is used appropriately only if what immediately follows not only and but also are grammatically parallel. For example, if what immediately follows not only is an adjectival phrase, then what immediately follows but also must also be an adjectival phrase.

flat既可以是adv也可以是adj词性，都是平直的；flatly是adv词性，是断然的意思；这里选flat

C. Correct. Both clean and fast-growing are adjectives and are therefore parallel; they can correctly be conjoined by and. This choice creates a sentence with the relative clause that pay . . . workers. Notice that the sentence has another relative clause that are clean and fast-growing. This relative clause parallels the other one. Using and to conjoin these two clauses, each modifying industries, is logical and correct.

E. The adjective clean is not parallel with the verb form paying.

...percent of x 单复数取决于x是可数还是不可数

E. This choice does not use not only . . . but also . . . correctly, because what follows not only is not grammatically parallel with what follows but also. What immediately follows not only is an adjective, whereas what follows but also is a verb phrase. Furthermore, could be dried is more idiomatically correct than able to be dried, as is used here.

前提 烟雾提供了正离子 结论 所以多出来额外的正离子一定是本来就存在于雷云中的。 那这个额外的正电子是不是雷云中存在的呢， 烟雾消失的时候 ，多出的正电子相撞减少了， 说明是这些额外的正离子不是本来就存在的，它们随着烟雾消失了，至于怎么消失，不在不需要考虑， 只是一定存在他因造成的。

C. This choice correctly focuses on the increase in consumer spending as a whole. However, it strings together too many adjectives; to make the sentence clearer and more readable, it would be preferable to state increase first as in choice E.

……的增长我们通常说 an increase in sth，比如本题 消费支出的增长通常表达为 an increase in consumer spending

B: would have done表示与现在相反的虚拟 比较对象错误

A. which引导的定语从句修饰其前面的toys，但逻辑上是Television programs developed in conjunction with the marketing of toys这个事件prohibited by federal regulations，A错误。

C: developing不能正在繁荣

date back to idiom
Definition of date back to
: to have been made in or to have come into being in (a certain time in the past)
They found jewelry dating back to the 1700s.