Passage Three Questions 22 to 25 are based on
the passage you have just heard.
A.Because terms such as "environmentally friendly" and "non-polluting" cannot be verified. B.Because terms such as "environmentally friendly" and "non-polluting" are often wrongly used. C.Because terms such as "environmentally friendly" and "non-polluting" are used too widely. D.Because terms such as "environmentally friendly" and "non-polluting" are groundless.