25、(同21题)An increase in the activity cycle indicates____
A.one is waking up.
B.a relaxing of body muscles.
C.an increase in the body’s rhythms.
D.the disappearance of delta rhythm.
A.one may b***me deaf when he hears a loud noise.
B.loud noises can cause damage to the hearing of young people only.
C.one may lose his hearing when he hears a terribly loud noise.
D.common sounds at home are not harmful to the ear.
27、(同26题)This passage suggests that one’s hearing____
A.will be damaged even if he has heard a loud noise for less than one s***nd.
B.will be damaged even if he has heard a loud noise for only little more than one s***nd.
C.will not be damaged if he has heard a loud noise for only little more than one s***nd.
D.will not be damaged if he has little more than one s***nd to get ready.
28、(同26题)One conclusion you can draw from this passage is that aspirin____
A.should never be taken more than four grams.
B.can damage one’s hearing when it is given more than four grams daily.
C.makes hearing damage from loud noise worse.
D.always increases hearing loss by two times.
29、(同26题)Millions of Americans are in danger of suffering hearing loss because they____
A.often take air trips.
B.like listening to loud music.
C.have too much loud noises at home and at work.
D.take too much aspirin.
30、(同26题)The American scientist did his experiment in order to find____
A.how much aspirin would affect a person’s hearing.
B. How much aspirin should be given in the treatment of the patients with hearing damage from loud noise.
C.whether aspirin would increase the temporary hearing damage from loud noise.
D.whether the person who had hearing damage should use aspirin.