yzed.
C.loss of consciousness has already occurred.
D.one’s eyes begin to move as if looking at something.
23、(同21题)REM sleep is characterized by____
A.a drop in temperature.
B.a loss of consciousness.
C.a lack of body movement.
D.the appearance of data waves.
24、(同21题)Muscular relaxation, a temperature drop, and breath regularity are characteristics of____
A.REM sleep.
B.Stage 1 sleep.
C.delta rhythms.
D.Stage 2 and 3 sleep.
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.
32、The word \!it" (para. 3) refers to the____
A.dream.
B.sleep.
C.feeling.
D.subject.
33、It is implied in the passage that____
A.our dreams cannot predict correctly what may happen to us in the future.
B.our dreams can be anything except past experiences.
C.one is most likely to feel cold while sleeping without a blanket.
D.one with poor memory had fewer dreams than people with a good memory.
34、According to the experiment described in the passage, the man’s dream was caused by____
A.what the back of his hand was feeling at the moment.
B.his fear of an operation.
C.his girl friend he has just visited.
D.the hospital in which he was treated.
35、According to the writer, the explanation of dreams that some scientists made____
A.is considered interesting, but meaningless.
B.gives a good answer to the question why we dream.
C.has some value, though not fully convincing.
D.has been proved by the findings of their studies.
A.three steps
B.five steps
C.four steps
D.a series of steps
37、The countries that have reduced hunger sharply in recent years include ____
A.Malaysia & India.
B.China & India.
C.India &. Singapore.
D.India & Thailand.
38、According to the passage, the green revolution is a way to increase harvests____
A.But it does not work everywhere.
B.And it works everywhere in the world.
C.but it is money consuming.
D.and it works only in India.
39、It is who suffer the most, according to the report.____
A.mothers & children
B.mothers & adults
C.mothers & teenagers
D.mothers & young children
40、The two serious medical problems linked to food shortages are____
A.lack of iodine & vitamin A.
B.lack of vitamin C & iodine.
C.lack of iodine & vitamin D.
D.all of the above.
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