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42、根据以下材料回答第42-66题： Passage Three If you want to stay young , sit down and have a good think. This is the research result of Professor Faulkner , who says that most of our brains are not getting enough exercise and as a result, we are ageing unnecessarily soon.
Professor Faulkner wanted to find out why healthy farmers in northern Japan appeared to be losing their ability to think and to reason at a relatively age , and how the process of ageing could be slowed down.
He set about measuring brain volumes of a thousand people of different ages and occupations.
Computer technology enabled him to obtain precise measurements of the volume of the front and side sections of the brain , which relate to intelligence and emotion, and determine the human character.
Contraction of front and side parts—as cells die off –was observed in some subjects in their thirties, but it was still not evident in some sixty-and seventy –year-olds.
Faulkner concluded from his tests that there is a simple way to slow the contraction-using the head.
The findings show that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Faulkner, are lawyers , followed by university professors and doctors. White-collar workers doing routine work are, however, as likely to have shrinking brains as the farm worker, bus driver and shop assistant.
Faulkner’s findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. “The best way to maintain good blood circulation is through using the brain , ” he says,” Think hard and engage in conversation. Don’t rely on pocket calculators.”Professor Faulkner wanted to find out_________.
A．how people’s brains shrink
B．the way of making people live longer
C．the size of certain people’s brains
D．why certain people aged sooner than others

43、Faulkner’s research findings are based on_________.
A．a survey of farmers in northern Japan
B．tests performed on a thousand old people
C．the study of brain volumes of different people
D．the latest development of computer technology

44、The professor’s tests show that_________.
A．our brains shrink as we grow old
B．the front section of the brain does not shrink
C．seventy-year-olds have better brains than sixty-year-olds
D．brain contraction may vary among people of the same age

45、The underlined word “subjects” in paragraph 5 means_________.
A．branches of knowledge studied in a school
B．something to be considered
C．persons experimented on
D．citizens in a country

46、According to the passage, which group of people seem to age slower than the others?
A．Farmer
B．Lawyer
C．Clerks
D．Shop assistants

47、根据以下材料回答第47-71题： Passage Four News has just been received of an air crash in the north of England. The plane , which was on a charter flight from London to Carlisle, was carrying a party of businessmen on their way to a trade fair. It seems likely that the plane ran into a heavy fog as it was approaching Carlisle and was obliged to circle for some twenty minutes. Everything seemed to be going well. The pilot was in constant radio communication with Ground Control when the engines suddenly cut out and all contact was lost. The plane crashed on the site of the ancient Roman camp at Hadrian’s Hill , a place well known to archaeologists(考古学家)and tourists.
So far few details have been reported, but it is feared that at least twenty people lost their lives, among them the pilot, who was killed instantly, The local ambulances and firemen were on the scene within minutes of the crash , but additional help had to be rushed from other areas.
Mr. Lesilie Collins, one of the survivors, told our reporter, “We passengers noticed the engines were making a funny noise. Of course we couldn’t see anything because of the fog, but the pilot said there was nothing to worry about. The next thing we know, the engines went dead. There was a rushing noise-and after that I don’t remember any more.”
Mr. Collins is now in hospital, being treated minor injuries. We will be bringing you further news of crash as we receive it . In the meantime relatives are asked to ring 02-3457211 for information.The plane was_________.
A．flying some businessmen to London
B．on a regular flighy to London
C．returning from a trade fair
D．bound for Carlisle

48、What happened when the plane was nearing Carlisle?
A．The pilot misread the signals from Ground Contro
B．Ground Control failed to send out right instructions
C．The pilot got a report of terrible weathe
D．The engines broke down

49、According to the passage, the plane crashed at_________.
A．a place in southern England
B．a place of historical interest
C．a military training camp
D．a camp near London

50、The news report tells us that when the crash occurred_________.
A．the ambulances and firemen arrived quickly
B．none of the passengers was killed
C．no additional help was necessary
D．help was tong delayed

51、From what Mr. Collins said, we can know that he_________.
A．had only an incomplete picture of what happened
B．heard and saw nothing at all
C．talked to the pilot
D．was once a pilot

52、根据以下材料回答第52-76题： Passage Five Online distance learning (网上远程教育) is an instructional system which connects learners with educational resources. Students work on their own at home, at work, or at school and communicate with faculty and other students by means of e-mail, electronic meetings, videoconferencing, chat rooms, instant messaging and other forms of computer-based communication. There are both advantages and disadvantages to online distance learning.
There are many benefits to using online distance learning environments. Online education is available all the time, anywhere and to all people. However, there are weaknesses for some learners. The online learner only has the written text and no other face-to-face hints. This may confuse the learner and cause misunderstanding. While distance learning allows for an openness, it is also difficult because it is done by e-mail messages and writing, and therefore may take more time than face-to-face learning. Sometimes the messages can be overwhelming for many online students.
Universities, colleges and schools use online distance learning environments. These are important for students who may be unable to attend classes for various reasons like illnesses or busy everyday schedules. Some learners just want to further their studies at home. They enjoy the convenience of home learning as they take regular programs or enrichment classes.
Online courses keep learners very occupied at all hours of the day .There are a great many nessages and other online resources to read and respond to . Most learners have regular jobs or attend regular school classes on ground as well . However, the benefits are clear. Online distance learning is becoming very popular. Some online classes have become a profitable business as they replace regular traditional means of learning.Which of the following is TRUE of the passage about online distance learning?
A．It has more disadvantages than advantage
B．It is a learning form based on interne
C．It is not available for some student
D．It has only enrichment classe

53、Sometimes online distance learning can be a problem because _________.
A．learners can’t afford it
B．learners get too many hints
C．it involves excessive writing
D．it is not available at the weekend

54、One of the good aspects of online distance learning is _________.
A．speed
B．convenience
C．easy operation
D．variety of instruction

55、What kind of students may NOT like online distance learning?
A．Those busy with their schedule
B．Those in need of further education
C．Those unable to attend regular classe
D．Those in favor of face-to-face teachin

56、With regular means of learning, the learners have to study_________.
A．at school
B．on their own
C．at all hours of the day
D．by means of reading and writing