阅读题一道，麻烦解答

Among the myths taken as

         fact by the environmental manag-

         ers of most corporations is the

Line  belief that environmental regula-

  (5)  tions affect all competitors in

a given industry uniformly.  In

reality, regulatory costs—and

therefore compliance—fall

unevenly, economically disad-

 (10)  vantaging some companies and

benefiting others.  For example,

a plant situated near a number

of larger noncompliant competi-

tors is less likely to attract the

 (15)  attention of local regulators than

is an isolated plant, and less

attention means lower costs.

Additionally, large plants can

spread compliance costs such

 (20)  as waste treatment across a

         larger revenue base; on the other

         hand, some smaller plants may

not even be subject to certain

provisions such as permit or

 (25)  reporting requirements by virtue

of their size.  Finally, older pro-

duction technologies often

continue to generate toxic wastes

that were not regulated when the

 (30)  technology was first adopted.

New regulations have imposed

extensive compliance costs on

         companies still using older

industrial coal-fired burners that

 (35) generate high sulfur dioxide and

nitrogen oxide outputs, for

example, whereas new facilities

generally avoid processes that

        would create such waste pro-

 (40) ducts. By realizing that they

have discretion and that not all

industries are affected equally

by environmental regulation,

environmental managers can

 (45)  help their companies to achieve

a competitive edge by anticipat-

ing regulatory pressure and

exploring all possibilities for

addressing how changing regula-

 (50)  tions will affect their companies

specifically.

Q10:

According to the passage, which of the following statements about sulfur dioxide and nitrogen oxide outputs is true?

1. Older production technologies cannot be adapted so as to reduce production of these outputs as waste products.

2. Under the most recent environmental regulations, industrial plants are no longer permitted to produce these outputs.

3. Although these outputs are environmentally hazardous, some plants still generate them as waste products despite the high compliance costs they impose.

4. Many older plants have developed innovative technological processes that reduce the amounts of these outputs generated as waste products.

5. Since the production processes that generate these outputs are less costly than alternative processes, these less expensive processes are sometimes adopted despite their acknowledged environmental hazards.

答案给Ａ，我认为选C，但是感觉说的也不太好。请问哪位帮忙解决