What is the population of the world in 2000 according to the passage？
About 9 billion.
B. About 6 billion.
C. About 3 billion.
D. About 5 billion.
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What kind of problem can be solved by the new technology？
A. It can help mankind solve the problem of planting tomatoes.
B. It can help mankind solve the problem of watering.
C. It can help. mankind solve the problem of salt.
D. It can help mankind solve the problem of feeding its population.
The result of scientists studying dolphins may prove that ______.
A. humans will be able to establish real communication with dolphins
B. dolphins can't talk at all
C. dolphins can talk through language that human beings will never understand
D. humans will never be able to talk with dolphins
When GBP/USD rate goes from 1.6150 to 1.8500, we say the dollar ______.
A. appreciates by 12.70%
B. depreciates by 14.55%
C. depreciates by 12.70%
D. appreciates by 14.55%
A sound bank will not suffer from the bankruptcy of other unrelated banks.
A. Right
B. Wrong
C. Doesn't say
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