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247 
decoding information and communications generally. They are used to predict the weather 
with increasing accuracy. 
40. One can conclude from the passage that .
A)computers have become an indispensable part of our life 
B)weather forecasts carried out by computers are not reliable at all 
C) despite great advances in computer techniques, they are not proving as useful-as 
once hoped 
D) robotics has long been a field of keen scientific interest for man 
E) computerised banking has led to an increase in unemployment 
41. The author points out that.
A)the police use computers to make sure that their records are not leaked 
B)industry is turning back to traditional methods of production 
C)the principal use of computers is in space technology 
D)computers are too complex for everyday use 
E) the use of robots, directed by computers, is becoming widespread in industry 
42. The passage is not concerned with .
A)how computers are produced 
B)the application of computers in industry 
C)the use of computers in communications and the transfer of information 
D)the conservation of information by technology 
E)the role played by computers in crime detection 
Looking ahead from the present position where food production has kept ahead of 
population growth globally, but has fallen per capita in 55 (mainly African) countries, it 
would seem that these trends will carry on. About 30 countries most of which are African 
can expect serious problems unless they reduce population growth and give higher 
priority to agriculture and conservation. Though a warmer, wetter earth with high C0
2
levels is likely to be capable of producing more food, the amounts will still be inadequate 
for many poorer countries. In many circumstances, the population projections are greater 
than the entire local land resources can support. 

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