Passage One Questions 26 to 29 are based on the passage you have just heard.

A．He will not continue with the experiment today.
B．He will work on the experiment without the woman.
C．He does not know when the experiment will be finished.
D．He will spend more hours on the experiment.

A．motor vehicles improve children’s independent mobility
B．the convenience of cars has also brought bad effects upon children
C．cars make children lose freedom for they are always supervised by their parents
D．parents should make full use of their cars to make their children independent