2.Questions 14through 16are based on the following passage.
14.A.They haven't devoted as much energy to medicine as to space travel.
B.There are too many kinds of cold viruses for them to identify.
C.It is not economical to find a cure for each type of cold.
D.They believe people can recover without treatment.
15.A.They reveal the seriousness of the problem.
B.They indicate how fast the virus spreads.
C.They tell us what kind of medicine to take.
D.They show our body is fighting the virus.
16.A.It actually does more harm than good.
B.It actually helps us to recover much sooner.
C.It causes damage to some organs of our body.
D.It works better when combined with other therapies.