When the temperature of a gas is increased, it is either accompanied by an increase in pressure if the gas is enclosed in a container, or an increase in volume if the gas is able to expand.

A, When the temperature of a gas is increased, it is either accompanied by an increase in pressure if the gas is enclosed in a container, or

B. When the temperature of a gas is increased, it is accompanied either  by an increase in pressure if it is enclosed in a container or

C. When the temperature of a gas is increased, the increase is either accompanied by an increase in pressure if the gas is enclosed in a container or by

D. Any increase in the temperature of a gas is either accompanied by an increase in pressure if it is enclosed in a container, or by

E. Any increase in the temperature of a gas is accompanied either  by an increase in pressure if it is enclosed in a container or by

请教牛人啊！！！为什么E可以阿？ANY不是强烈语气表达吗，应该不能够随便添加和丢失的呀！！谢谢谢谢！！！

A和B：都缺少BY，不能平行

C：awkward且either的位置也不对

D：either的位置不对

这里when表示“只要是~~~上升~~~那就要么~~~要么~~~”其实和“任何的上升~~~要么~~~要么”意思其实是一样的

any是强烈语气，但也要根据具体情况，比如说，说books~~~有个选项说any book那就错了，改变了原意，不是说加了any一定错，关键看意思

楼主请看好，AB拿it指代increase的动作这是错误的either 位置不想说了。。。

楼主似乎对语法上的判断先后顺序还没有掌握，

你要整理出来，一些东西一出现肯定是错的，比如说it指代either 平行，还有主谓一致，明显的时态错误。

之后我们才是那一些细节的东西去判断我们所剩下的貌似正确选项，因为他们致命的错误没有犯，所以就是局以上等等的问题了。

楼主要想做好语法，就得先把语法知识掌握，再练出做语法的判断顺序和感觉。。。

 阿...我明白了...

抓大放小..大的OK了,才看那些有效性的小的错误!

谢谢大家!