几个不懂得题目～～求教～

The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary considerably on a spectrum of genetic relatedness.

1. The fact of some fraternal twins resembling each other greatly and others looking quite dissimilar highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary considerably
2. That some fraternal twins resemble each other greatly while others look quite dissimilar highlights an interesting and often overlooked feature of fraternal-twin pairs, namely that they vary considerably
3. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it highlights an interesting and often overlooked feature of fraternal-twin pairs, namely considerable variation
4. With some fraternal twins resembling each other greatly and others looking quite dissimilar, it is a fact that highlights an interesting and often overlooked feature of fraternal-twin pairs, namely a considerable variation
5. Because some fraternal twins resemble each other greatly and others look quite dissimilar, this fact highlights an interesting and often overlooked feature of fraternal-twin pairs, namely they vary considerably

这个题目的考点在哪里？ 完全被打懵了……答案是B。能帮我分析下B的语法结构么？

1. the sandpipers vanishing in the northeastern United States is a result of residential and industrial development and of changes in
2. the bird itself is vanishing in the northeastern United States as a result of residential and industrial development and of changes in
3. that the birds themselves are vanishing in the northeastern United States is due to residential and industrial development and changes to
4. in the northeastern United States, sandpipers’ vanishing is due to residential and industrial development and to changes in
5. in the northeastern United States, the sandpipers’ vanishing, a result of residential and industrial development and changing

   Answer: A B

这个题目，LIKE开头的，主语应该和LIKE后面的东西应该是同一类吧？LIKE后面的是grass fields and old pastures,怎么答案B里面主语是bird itself?

b. something highlights a feature of fraternal-twin pairs, the feature is that the twins genetic relativeness vary. 这是这句话的意思。长难句。

A根本就不对的。呵呵。 C: it多余，指代不清。considerable variation缺主语。 D:it is a fact that很wordy. a considerable variation没有主语。 E: 多加了因果关系。

Grassy fields and old pastures都是负数，the bird是单数，不能compare，所以B是错的。the bird ITSELF多余的词

谢谢啊～

可是第二题答案就是B

我就是觉得不会是B啊～

第一题B选项主语是That some fraternal twins resemble each other greatly while others look quite dissimilar, 谓语是highlights，宾语就是an interesting and often overlooked feature of fraternal-twin pairs了。namley引导的就是解释了。

这句话大致翻译一下就是说一些异卵双生儿彼此长的很像而另一些却差异很大（这样的事实）强调了一个关于异卵双生儿的有趣但常常被忽略的特性，即他们在一连串的基因关联上有很大的差异。

考点应该就是agreement了，理清句子想要表达的意思之后不难看出句子结构。

第一题:

第一个that 引导的主语从句

namely that引导定于从句修饰feature

第二题：

bird可以和grassy field类比的

句子要表达的意思是，S鸟的栖息地在减少同时S鸟也在减少

A is a result of 没有B as a result of清楚

第二题虽然B选项里面Like the grassy fields and old pastures 和后面的the bird itself乍看单复数不平行，但是请先多读读这句话，搞清它想说明的是什么。

这句话简单来说就是“就像草地和牧场一样，这种鸟本身也因为各种原因而消亡了”。个人觉得这样理解就没有问题了啊。

弱弱问一句，OG上有说单复数一定要平行吗？结构平行就可以了啊。

Agree!

我也想请教一个题，大全里的，想不通为什么谓语不用单数，

21.   Recent essays by Garrison Keillor, the humorist and host of the public radio show A Prairie Home Companion, describes what might happen if Huns, Goths, and Visigoths were to invade Chicago.

(A) describes what might happen if Huns, Goths, and Visigoths were to invade

(B) describes what would happen if Huns, Goths, and Visigoths invaded

(C) describes what would happen if Huns, Goths, and Visigoths would have invaded

(D) describe what might happen if Huns, Goths, and Visigoths were to invade（D）

(E) describe what happen if Huns, Goths, and Visigoths invade