Questions 29 to 31 are based on the passage you have just heard.

A．The candidate would be given a big salary to start with.
B．The candidate’s increases in salary would be dependent on his effectiveness.
C．The candidate would get a bonus though he has no overtime pay initially.
D．The candidate expects high salary though he would not have the ability.

A．Poor quality leads to the short-term use of products.
B．People do not like one-time use products.
C．Products tend to be disposable.
D．People refuse to use returnable objects.