A中 后面的as，如果表因为，就应该是连词后面跟句子，但是此项the fuel used in the smelting of iron ore不是句子呀，这样as的用法对吗

E，不管用新药还是青/红霉素，病人都会感觉自己服药在3天内痊愈了。这说明其实病人可能3天内并没有实质上痊愈了，只是feel痊愈了，如果用传统药，自然就会复发了，因为传统药治疗周期是7天；用新药，就算3天后停药业没关系，因为它的治疗周期就是只有3天。所以选E

Most pre-1990 literature on businesses' use of information technology (IT)—defined as any form of computer-based information system—focused on spectacular IT successes and reflected a general optimism concerning IT's potential as a resource for creating competitive advantage.

Resource-based theory offers an answer, asserting that, in general, firms gain competitive advantages by accumulating resources that are economically valuable, relatively scarce, and not easily replicated. According to a recent study of retail firms, which confirmed that IT has become pervasive and relatively easy to acquire, IT by itself appeared to have conferred little advantage.

A和B中，and的后面是原因状语从句，而左边没有，这也是一种错误吧

seamstresses, meanwhile, were impatient with the remaining restrictions on their right to clothe women.

B by 1978 these six economies, along with India, enjoyed unequaled growth rates for gross national product and for exports, with exports accounting for 70 percent of the developing world's manufactured exports. 应是developing world
C burst into the world manufacturing market in the late 1960s and the 1970s; by 1978 these six economies, along with India, enjoyed unequaled growth rates for gross national product. unequaled 无与伦比的

B没读懂，是上一次限制后已经很多年了的意思

选项之间第一个区别在于不定式／从句／-ing，第二个区别在于them／it。因为我很多时候分不清什么时候用不定式什么时候用从句／-ing，所以第一个区别我们可以暂时放在一边，由句式我们可以分析出dinosour是主语，用单数，所以排除ADE，比较BC可发现allow 的用法不同，C选项allow sb to do sth.，B选项allow sb sth，简洁性原则动词大于名次，选C

错选A that跳跃修饰 have复数

错选D 表达的是和什么东西一样硬或者和什么东西一样软，而题目意思是太硬了以至于怎么样。 不定式与从句区别

movements复数

错选A，不定式与从句区别，不定式表状态变化

错选D，平行；after habitat loss就近修饰

我想问一下，这道题如果把这个划线部位整体向后挪，挪到have这个动作做出来以后，是否就可以加上Have这个动作？

讨论对象是鸡和牛，吃一样的东西为什么鸡不得病，说明问题出现在鸡和牛不同的地方。其它选项都因为无关被排除了。E有点迷惑，都说了吃的同一种饲料了。

I think choice (E) wrong because two verbs in this choice are not in the same quantity.

(E) there are often greater differences in scenting ability between two members of a single breed than there is
数量级！

this is the problem. if "with ____" is modifying xxxxx, then it should be describing some aspect, or sub-component, of xxxxx.

here, "each" = each style of cooking.
we can't use "with each style of cooking..." to describe "styles of cooking".

his is the problem. if "with ____" is modifying xxxxx, then it should be describing some aspect, or sub-component, of xxxxx.

here, "each" = each style of cooking.
we can't use "with each style of cooking..." to describe "styles of cooking".

(1)Na/Nc=3/2, 能约掉