单项选择题

The author suggests in the passage that _________.

A．there will certainly not be enough raw materials for the world economy in the year 2008.
B．world petrol supplies will have been exhausted by 1985
C．we need to use natural resources carefully and divide them up equally
D．to show down the economic growth in developed countries might be a possible solution to the problem

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单项选择题

If we take immediate action, the population in the southern parts _________.

A．would not stop growing.
B．would level off in fifty years.
C．could stabilize in about seventy-five years.
D．could soon be brought under control.

单项选择题

World petrol reserves will be used up by 1985 if _________.

A．Western European consumption continues to expand
B．South-East Asia does not limit its consumption.
C．underdeveloped countries start to consume petrol the same rate as Western Europe.
D．world population continues to expand.