A．alternative sources for paper products are found.
B．logging is banned by the local government.
C．consumers increase their environmental sensitivity.
D．Canadian Pulp and Paper Association reduce its production.

A．the exchange rate between pounds and dollars is fairly stable.
B．less money was actually spent on the maintenance of major highways.
C．the Office for National Statistics made a revision of its figures.
D．Mr. Brown himself is greatly devoted to meeting the golden rule.