单项选择题
Passage TwoQuestions 30 to 32 are based on the passage you have just heard.
A．Flexible. B．Critical. C．Supportive. D．Cautious.
A．Customers may get addicted to the smells. B．Customers may be misled by the smells. C．It hides the defects of certain goods. D．It gives rise to unfair competition.
A．Eliminate poverty and injustice. B．Migrate to other planets. C．Control the environment. D．Find inexhaustible resources.