单项选择题


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.