36.What is the author mainly talking about in the passage? __________.
A.Visual impairment and memory.
B.The visually impaired person’s physical and social environment.
C.Mental development of the visually impaired person.
D. Orientation and mobility of the visually impaired person.
37.The visually impaired person’s position in space__________.
A.is not determined by memory but by physical landmarks and clues
B.is located in relation to other items in his mental map
C.enables him to construct the mental map
D. reinforces the mental map of his surroundings
38.Mobility skills which the visually impaired person is learning refer to the ability __________.
A.to travel as a dependent tourist
B.to travel as a pedestrian with a company
C.to travel as a pedestrian and a passenger
D. to travel within the safe physical and social environment
39.In the passage，the author insists that__________.
A.visually impaired children go to school for survival
B.the need s and demands of visually impaired children expand
C.visually impaired children acquire the fundamental concepts for safe mobility
D. preschool children receive the instruction in the concepts of time and space or objects and events
40.How can we increase the visually impaired person’s ability to travel through his physical and social environment? __________.
A.By helping him develop adequate orientation and mobility skills.
B.By teaching him to learn observational skills.
C.By warning him of hazardous situations or obstacles.
D. By improving his visual ability.
41.Which is true of many AIDS sufferers in developin countries? __________.
A.They put too little emphasis on treatment.
B.They are not receiving any treatment.
C.They refuse to be treated.
D. They live longer than those in developed countries.
42.The WHO publishes its World Health Report__________.
A.once every two years
B.once a decade
C.once a year
D. twice a year
43.According to Lee, our response to the AIDS disease is__________.
A.a matter of great significance
B.a matter of little significance
C.overemphasized
D. timely
44.AIDS treatment programs may also result in__________.
A.better drugs
B.lower yearly cost
C.more effective prevention
D. greater emphasis on treatmen
45.How many people have died of AIDS so far?
A.36 million.
B.46 million.
C.Around 440,000.
D. More than 20 million.
