Everything from THAT to WORKERS is modifying the noun INDUSTRIES. So what do we have? Industries THAT x and THAT y. What are our x and y?
x = ARE clean and fast-growing
y = PAY good wages

Since clean and fast-growing are adjectives, while pay is a verb, we need a way to provide all of these traits without trying to make them parallel items in one list. So we have the verb ARE to introduce the adjectives, and the verb PAY to make the last point.

平行的原则，平行的三个元素应该都是adj，而paying...to...是主谓宾结构，因此跟C相比，E选项不平行。

如果是三个形容词的并列，应该是E不加and
所以不能是三个形容词的并列，只能是前面两个形容词用and连接
后面的that pay 与that are XX 并列表示industries的情况

that...and that，用于描述industries的两个特征

paying是动词ing，只有在做形容词修饰同一个对象的情况下才能和其他形容词并列（from Manhattan语法）

xxx industries that are clean and (are) fast-growing and (industries) that pay good wages to xxx

paying不可以做形容词
这里的平行结构是industries【that are clean and fast-growing】, and【that pay good wages to skilled workers】
没选C的时候没有注意到fast-growing前面没有用逗号连接啊啊啊

industries that [are A and B], and that [v ]

paying是gerund

paying不可以是形容词

adj, adj and verb 错 三者不构成平行关系
adj and adj 定从that and 定从that

C. Correct. Both clean and fast-growing are adjectives and are therefore parallel; they can correctly be conjoined by and. This choice creates a sentence with the relative clause that pay . . . workers. Notice that the sentence has another relative clause that are clean and fast-growing. This relative clause parallels the other one. Using and to conjoin these two clauses, each modifying industries, is logical and correct.

paying不是形容词 是v-ing 看到that 前面找平行

clean and fast-growing平行，然后v-pay

有坑。。。。咋一看A好像可以，但是are paying会变成正在做某事，无法形成并列关系且容易有歧义，所以选C

平行关系找准：clean和fast growing，that后面的are和that pay并列

坑爹啊。。。。

平行：
C：xxx industries that are clean and (are) fast-growing and (industries) that pay good wages to xxx
E：paying和clean不是一种性质，一个是动作性的ving，一个是形容词。

C. Correct. Both clean and fast-growing are adjectives and are therefore parallel; they can correctly be conjoined by and. This choice creates a sentence with the relative clause that pay . . . workers. Notice that the sentence has another relative clause that are clean and fast-growing. This relative clause parallels the other one. Using and to conjoin these two clauses, each modifying industries, is logical and correct.

E. The adjective clean is not parallel with the verb form paying.

错把paying 当成了状语，这里应该将后面的从句和前面的从句平行，都是形容industry的特点的。