Passage One Questions 26 to 28 are based on the passage you have just heard.

A．Most students felt disappointed and unhappy.
B．The class was generally nervous and quiet.
C．Many students were too excited to speak.
D．A few students behaved especially well.

A．Computers are commonly and widely used in home and offices nowadays.
B．Computers are easily to be attacked.
C．Adopting good computing practices is a good advice to protect the computer.
D．The viruses are too fearful, computer is not safe any more.