Whatever its underlying reasons, there is no doubt that much of the pollution caused could be controlled if only companies, individuals and governments would make more efforts. In the home there is an obvious need to control litter and waste. Food comes wrapped up three or four times in packages that all have to be disposed of; drinks are increasingly sold in bottles or tins which cannot be reused. This not only causes a litter problem, but also is a great waste of resources, in term of glass, metals and paper. Advertising has helped this process by persuading many of us not only to buy things we neither want nor need, but also to throw away much of what we do buy. Pollution and waste combine to be a problem everyone can help to solve by cutting out unnecessary buying ,excess consumption and careless disposal of the products we use in our daily lives.
45. The underlined phrase “disposed of ”in the second paragraph means_______.
A. dealt with B. exposed
C. disapproved of D. collected
46. In the writer’s view ,the more new goods, _______.
A. the less pollution
B. the harder pollution can be prevented
C. the more pollution there will be
D. the more easily pollution can be controlled
47. What can we learn from the last paragraph?
A. We can do much to reduce pollution.
B. The government is trying hard to stop pollution.
C. Individuals know how to get rid of the habit of littering everywhere.
D. We can’t stop buying unnecessary things.
48. People can help solve the problem of pollution by _______.
A. urging their governments to control litter and waste
B. making anti-pollution advertisements
C. cutting down the use of oil and other oil products
D. reducing unnecessary buying, over-consumption and careless disposal of wastes
C
It is difficult to imagine what life will be like without memory.The meanings of thousands of everyday perceptions(感觉、知觉), the bases for the decisions we make, and the roots of our habits and skills are to be found in our past experiences, which are brought into the present by memory.
Memory can be defined as the capacity to keep information available for later use.It includes not only “remembering” things like arithmetic or historical facts, but also involves any change in the way an animal typically behaves.Memory is involved when a rat gives up eating grain because he has sniffed something suspicious in the grain pile.Memory is also involved when a six-year-old child learns to swing a baseball bat.
Memory exists not only in humans and animals but also in some physical objects and machines.Computers, for example, contain devices from storing data for later use.It is interesting to compare the memory-storage capacity of a computer with that of a human being.The instant-access memory of a large computer may hold up to 100,000 “words”—ready for instant use.An average U.S.teenager probably recognizes the meaning of about 100,000 words of English.However, this is but a fraction(部分、片断) of the total amount of information which the teenager has stored.Consider, for example, the number of faces and places that the teenager can recognize on sight.
The use of words is the advanced problem-solving intelligence of human beings.A large part of a person’s memory is in terms of words and combinations of words.
49.According to the passage, memory is considered to be ________.
A.the basis for decision making and problem solving
B.an ability to store experiences of future use
C.an intelligence typically possessed by human beings
D.the data mainly consisting of words and combinations of words
50.The comparison made between the memory capacity of a large computer and that of a human being shows that ________.
A.the computer’s memory has a little bigger capacity than a teenager’s
B.the computer’s memory capacity is much smaller than an adult human being’s
C.the computer’s memory’s capacity is much smaller even than a teenager’s
D.both A and B
51.The whole passage implies that _______.
A.only human beings have problem-solving intelligence
B.a person’s memory is different from a computer’s in every aspect
C.animals are able to solve only very simple problems
D.animals solve problems by instincts rather than intelligence
52.The topic of the passage is __________.
A.What would life be like without memory?
B.Memory is of vital importance to life.
C.How is a person’s memory different from an animal’s or a computer’s?
D.What is contained in memory?
D
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Vacancies (空位) now and in the school holidays at a country hotel in Devon. This comfortable, friendly home-from-home lies near the beautiful quiet countryside, but just a drive away from the sea. The food is simple but good. Children and pets are welcome.
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