新编六级听力练习 第374期

Passage Two
29.
A. They were expensive.
B. No one believed them.
C. They were unsuccessful.
D. They were often not welcomed.
30.
A. They realized some companies exploited the movement.
B. They didn't know what to do.
C. They didn't realize some companies made false claims.
D. They didn't like green advertisement.
31.
A. They became more popular.
B. They were more regulated.
C. They became better produced.
D. They became less honest.