A中本句的意思是：很多种类的恐龙有一个（一类）新陈代谢，这在逻辑上是正确的吗？科学家声称的应该是很多恐龙的新陈代谢具有的某种特点，而不是“很多种类的恐龙有一个（一类）新陈代谢”吧？A感觉和D中一样，语义也是怪怪的。

A is to B what C is to do是一个习惯表达，而不能用A is to B similar to C is to D，

一句话，only只修饰它身后的一个词。

是中文ABCD都像对的

为什么displacing grasses...是伴随状语？为什么不是, a herbaceous plant from Eurasia with milky sap that gives mouth sores to cattle,这个作为对leafy spurge进一步解释的插入语（暂时拿掉），然后displacing grasses and other cattle food and rendering rangeland worthless这俩动名词引导的作为并列成分修饰leafy spurge呢？

解完应该是(根号2x-根号x)/x，怎么得出D？

AD：become more increasingly 重复 wordy；CE：coming和becoming，分词的使用不恰当。

of the federal advisory committee of experts 主句宾语修饰成分，it（指代 the white house）assigned （that 省略 定语从句修饰 experts）to do a report.

Halley 's comet did cause such a worlwide sensation in no other historical sighting as (it did) in its return of 1910-1911
比較用法的兩大兩小原則：
第一大：比較用片語的適當性

-普通比較(more 配 than, as配as...)
-特殊比較(compared to/with , as, like/unlike...)

第二大：可比性(平行對稱)
-人比人、物比物、懶x不能比雞腿

第一小：排除自己原則
-Taipei 101 was once taller than "any other" buildings in the world.

第二小：指明要比誰(是否補出助動詞)
S....+比較用法....+O...than/as
若與主詞相比要補出助動詞。

command subjunctive

This type of manufacturing has greatly increased the number of new products introduced annually in the United States.往前找，this type of manufacturing指代了flexible manufacturing

Even though manufacturers and retailers can forecast aggregate demand with some certainty, forecasting accurately how that demand will be distributed among the many SKU's they sell is difficult

句子作用题：为举例说明forecasting accurately how that demand will be distributed among the many SKU's they sell is difficult

between...and 是包括边界值的

not only放在句首倒装时，but also及其变形体必须连接一个完整的句子。

they also make extensive use of "market-exchange" relationships, in which either party can turn to the marketplace and shift to different business partners at will, a practice usually associated with Western manufacturers.
a practice作为同位语往前去修饰 'market-exchange 'relationships: 合作关系中的任意一方都可以随时回到市场上寻找另一个商业伙伴。