平行ace b缺连词
但是e
rob和make是alter的两个并列的后果，两个并列是成分用and连接时，and身前不能有逗号。例如，一般我们说：
(1) James and I went to New York.
我们不说：
(2) **James, and I went to New York.
当投资100刀和每年能挣2刀并列时，应该写为：
I invested $100, holding 3 share, and could earn $2 per year.
此时不能写为：
I invested $100, and I held 3 share and could earn $2 per year.
It is thus evident that less fossil fuel is being used as a result of the operations of these industries than would have been used if these industries had retained their older technologies.
= It is thus evident that less fossil fuel is being used as a result of the operations of these industries than (the fossil) would have been used if these industries had retained their old technologies.
as a result of the operations of these industries 运营
A 没有事故对石油产业有利，跟削减成本和事故多发没有关系
B recently的事情，跟过去5年无关
D 支持环保人士
E 无关
D选项： 倒装
There is evidence (that the most damaging of the recent oil spills would have been prevented had cost-cutting measures not been instituted.) 后面（）都是evidence的同位语。
同位语为虚拟语气，后面的if省略并倒装。The most damaging of the recent oil spills would have been prevented if cost-cutting measures had not been instituted. 意思是要是（过去5年）没有消减成本，那现在这些安全事故就可以避免了。
方案推理，紧扣方案的三个方向：1. 可行性（能否达到目的）， 2.可操作性， 3. 副作用，另外还有提出新方案的都不是选项。
题目：更精准的筛选投递对象 和 增加反馈率 之间的关系。
A 新方案，排除
C 用户对待广告邮件的行为方式，与精准投递无关
D 广告邮件的内容，与精准投递无关
B 目前一些公司已经采取这一方案， E 用户对广告邮件的反馈率要大大高于其他广告形式。 E是方案能达到目的的大前提，如果（取反）广告邮件的反馈率本身就很低，那不管怎么精准投递，反馈率也不会好到哪里去，削弱了论点。但是如果把B也取反，即便现在没有一家公司采用了这一方案，也不能说明这个方案就不好，不能削弱论点。再比如，如果有人跟你提出这个方案，你要反驳对方这个方案不好，相比”现在没有公司用这个方案“，”广告邮件的反馈率压根就不高“这个反驳更有效。所以如果要增强，答案是E。
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句子完整，只剩cd，such as 后面不是只能跟一个词的，选d