S一开始有个but，还有就是a normal, moderate level中的两个adj表示的程度都是正常的程度。

authority的目的是想要increase ridership dramatically，所以答案应该是不能达到这个目的的选项。

A 要开听证会，无关
B 要私签合同调设备，无关
C 在涨钱之前大家囤了很多券，无关
E 头儿自己家就是俱乐部会员，无关

D 涨钱以后，差不多20%的上班族绕开这两座桥去上班 --> ridership就不会增加了，方案失败。

enough to do x and do y.
这里x是affect the trajectories of ballistic missiles, y是induce electric currents。两个动作要用连词连起来，不能就用个逗号。

A than never before, 排除。
B more是作为closely的比较级的构成方式，应该是more closely，more的位置不对。
C 有closely的比较级more closely，要用than，不用as；还有never before不对。
E closely的比较级错误，more的位置不对，排除。

A than后面省略的主语部分是a percentage of the gross national product，句子的意思就变成了”荷兰在保护海岸线上的花费要比他们花在美国军事防御上的花费要多“。
B they没有指代对象。
C their没有指代对象
D 比较对象错误，前面是Holland，than后面是the military defense

PREP上的解释，可以参考一下：
To be parallel, the comparison should be: Holland spends more x on y than the United States spends on z.
The grammatical structure is the same in each clause: the country is the subject; spends and does (spend understood) are the verbs; (x) the percentage of gross national product is the point of comparison; and (y) on defending ... and (z) on military defense are parallel phrases completing the sentence.

People in 20s - 10% read newspaper
People in 30s - 50% read newspaper

You might expect that since the younger generation is not reading the paper much, after some years, the % of people reading the paper will decrease. But the publishers claim that after some years, the % of people reading the paper will stay the same. How can you strengthen it?
What I think will strengthen it: People start reading the paper as they get older or something similar
Option (C) tells you that proportion of people reading the paper in their 20s has always been low. Hence, people who are right now in their 30s were also not reading the paper much when they were in their 20s. Which means that they start reading the paper at a later age. This strengthens the publishers' claim.

B, D and E are out of scope and needn't be considered at all.

As for (A), what we are interested in is the % of paper readers within each age bracket. Whether people in 20s are more or people in 30s are more doesn't matter. We need to keep the % of people reading the paper the same.

用521n9 除以3 能算出n

B. 错在only，也可能只是majority

E. crop一定可以替代rice吗？并没有说明

感谢感谢能有个地方刷题

B) The one-time costs of changing the automatic toll-collectors would not be significant given the five years of revenue from the increased tolls.
D) Correct. This statement properly identifies a factor that weakens the authority’s financing plan.

A. that (scientists hope) will enable them to understand how the solar system formed some four billion years ago嵌入式关系分句
B. scientists are hoping to enable them错误
CE. 原文意思应该是这些measurements使科学家能......而不是科学家自己就be able to......
D. and which错误

Since 1980, productivity improvements in manufacturing have moved the United States from a position of acute decline in manufacturing to one of world prominence.
说明pre-1980是acute decline，故A选项正确

A是strengthen
E选项意思是高利率会同样延缓制造业和服务业，这样就无法解释差异

Typically, the structure "make it easy" or "make it easier" is followed by an infinitive, perhaps an infinitive with the subject of the infinitive in a "for" prepositional phrase.
. . . make it easy for passengers to get in and out . . .
Choice (A) would be correct if it didn't have the "and" at the beginning messing up the parallelism.

What's subtle and funny about (D) is that it almost feels as if there's a missing infinitive . . .
. . . make it easier for passengers to do something? when getting in and out . . .
Because the infinitive is so often used, and so often follows a "for" preposition, having something else makes the sentence feel as if an infinitive should be there somehow.

Also, the construction of (D) is technically illogical--it's a colloquial construction that native speakers use frequently in informal conversation, but it doesn't withstand logical analysis. Here's the correct construction again:
. . . make it easy for passengers to get in and out . . .
What is made easier? The act of getting in and out. The "dummy it" refers to the infinitive. That make sense.
Now, (D).
. . . make it easier for passengers when getting in and out . . .
What is made easier? The "dummy it" appears to refer to the subordinate clause beginning with "when." The "when" clause denotes a time. How is time itself "made easier?" Yes, yes, colloquial, people say stuff of this sort all the time ("she made lunchtime easier," "our end-of-year shopping package makes your holidays easier") It's colloquial and technically illogical. What is meant is that we something easier for someone at that time--we didn't make it easier for the time itself.

All of those are problems with (D).

Ron：
I don't know the terms "restrictive" and "non-restrictive", so I'll just give you a bunch of examples.
In general, the idea is this: Modifiers blocked off by commas don't narrow down possibilities; they just give additional descriptive information. Modifiers not blocked off by commas generally do narrow down possibilities.

--

John, running to catch the bus, slipped on the icy pavement and fell.
--> It would be nonsense to take away the commas, because "John" -- who is just one person -- is impossible to narrow down.
--> "Running to catch the bus" describes John.
--> Importantly, "running to catch the bus" is related to the action of the sentence. (John was running when he slipped and fell.)

--

If this kind of relationship doesn't exist, the __ing modifier is inappropriate.

*Jesse, standing almost eight inches taller than me, is my brother.
--> Nonsense, because a height difference has no relationship to the fact that we are brothers.

--

"Which"/"who"/"whom"/"whose" implies no such relationship.

Jesse, who stands almost eight inches taller than me, is my brother.
--> This sentence is fine.


Looking at the examples above -- especially the first two -- you should be able to tell what's wrong with "carrying...". The biggest problem is the complete lack of any relationship between this capacity and the other ideas that follow (gas mileage, smooth ride, etc.)

remember that parallelism is really of 2 types: GRAMMATICAL and LOGICAL.

in your case, v1 though v5 all happen to be in the same tense - present tense, because we're talking about unchanging features of minivans - but ONLY v2 through v5 are LOGICALLY parallel.
v1 describes the van's passenger seating capacity, which is NOT presented as a point of superiority over sport utility vehicles, while v2 through v5 specifically describe advantages of minivans over sport utility vehicles.
therefore, the sentence is written with v2 through v5 in list form, but, because v1 isn't in the same category as those others, it's (rightfully) excluded from that list.

that/which可以修饰就近的“名词”，也可以跨越修饰“名词+介宾短语”，
按照意思，是devastation and enslavement杀死了大批的native people，不是progress

在A is as adj. as B这个结构里，最要紧的是第二个as
第二个as的出现就表明了，你是在对比两件事物，那就必须保证这个A和B是可比的，是同种的
The book is not as good to read. 这个as就是为了强调good的程度，而to read是我要说的动作。
而The book is not as good as that one. 第一个as还是为了强调good的程度，而第二个as就表明我是在比较两个东西。
那具体到The soil is not as hard as to make it difficult to burrow....
这个第二个as的出现，明显就应该表明我是要比较两个东西了，可是"to make it difficult to burrow",暂且不管它是不是名词结构，它和那个soil都不是一个概念，不可比。这个才是最最主要的错误点~
D选项as...as比较前后两个事物，但后面是to do，非名词，故错误

B选项 recovered by archaeologists in 1982 为什么不能做前一句Henry ship Mary Rose sank in 1545 的伴随状语呢？这样的话recovered的主语不就是船了吗？