A 无脊椎动物错 已经identify 它是最原始的脊椎动物了
B 牙齿由外壳进化而来（观点1），错 观点2先有牙齿 再有外壳
C 出现在观点1 错

D 用armor定位
（1）Teeth were more primitive than external armor according to this view, 定位观点2 第二段最后一句
（2） apart from the elements in the mouth indicates that conodonts were more primitive than the armored jawless fishes such as the ostracoderms. 定位结论段中间

E original observations=traditional 观点1是错的

定位第三段 结论支持观点2

解剖学证据anatomical evidence =The stiffening not ochord along the back of the body, V-shaped muscle blocks along the sides, and posterior tail fins help to【identify conodonts as among the most primitive of vertebrates.】

DPaired eyes and adaptations for activity are definitive characteristics of vertebrates.

B削弱了两个，上下坡时间一样，那就和体力无关。C的话停顿同样时间是用来看虫子，看清了以后加速冲过去，说明体力好着呢

这题啥意思啊。。。n/3 tallest people n the group is XXX. 比如n=5, 就是5/3最高的人?

twice as many English majors as history majors的意思是：选英语的人是历史的两倍，也就是E=2H

同样选英语的是数学的3倍 E=3M

因此，H/M=3/2

选B

问题问的是D的人数比例。

X,Y共同工作需要花48分钟，那么只需知道X或者Y工作需要花的时间就能求出另外一方花的时间，工作时间的比例即能求出工作效率之比，在一个tank里面注水的比例也能求出

一组数字，问他们的平均数=中位数？
条件1: 按大小排序，连续两个的差是2 ，以2为差 的 等差数列，比如 2,4,6 2,4,6,8 平均数=中位数 sufficient
条件2:最大值-最小值=2(n-1) 比如n=3 那么有3个数，比如2,3,6 平均数=5.5 中位数= 3; 比如2,4,6 平均数=中位数=4 insufficient

n的意义是数列里数字的个数。。。忘记了，呃。。。

In general, the point of "that" and "those" is to stand for nouns without any attached modifiers/descriptions.
There's an explicit contrast with "it" and "they", which stand for a noun with all of the attached modifiers.

Choice E is still wrong, because it doesn't say "any other time".
"Any time" includes now. So, according to choice E, they can make more cars now than at any time"”"”including now!
Nonsense. X can't be more than X.

I'm going to make air conditioners quieter. --> I'm going to modify existing air conditioners so that they make less noise.

I'm going to make quieter air conditioners.
I'm going to make air conditioners that are quieter.
--> I'm going to make a new model that makes less noise.

A is like the first one of these, so it doesn't make sense in context.

sprinters in texas can run faster than they can in north dakota.
--> illogical; in this sentence, "they" would be taken to mean "sprinters in texas" (i.e., not just sprinters).

sprinters in texas can run faster than those in north dakota.
--> makes sense; "those" = sprinters, in this case.

same thing with "they/their" vs. "those" in these instances.

啊。。。。错了。结论是找工作应该要难，所以要去找和找工作相关的。找好PC答案就乱找！自打脸

1.AE 的now 多余，因为句子today‘s XXXX allows都表述了now这个涵义。
2. ABE at any time错，CD的at any other time正确，因为any time包含Today或者now这个时间段。
3. DE的make more f-e small cars than ....语法上more形容词修饰cars，导致语义错误，翻译大约为“现在的科技比历史上任何其他时期都可以制造更多的f-e的小车”，比较的重点成了对比过去，现在可以制造更多XXX样的小车。
4. C正确表达了可以制造更加f-e的小车，more做副词修饰f-e形容词, 而且是这些小车比历史上任何其他时间的小车都更加more f-e..

原文的结论是Croton's jays lack the navigational ability to find their way south on their own，可是选项c说的是jays没有能力向北迁移，这个选项并不能证明jays没有能力分辨向南啊，也就说有一种可能性，这种jays只认识北不认识南啊？逻辑上感觉c也是缺失一环

选项c的能否用论元是否需要原则排除？models average price 在这里不作为论元，而比较关系要求其应作为论元

by 是表示方式，这里不选择because of也是因为because of 本来就不符合这句话的本意。本意是，银行试图通过falling to honor。。。而参与商业欺骗活动，而不是“因为”falling to honor。。。而参与了商业欺骗活动~~

a questionable assumption for the argue 这个问题是想让我找什么？选项E说的是用电子扫描仪能制造的最小的点在未来一小段时间不会显著变小，这不是支持的么？怎么个questionable了？