单项选择题

Drastic changes in the weather have been common since a……

A．Drastic changes in the weather have been common since ancient times.
B．The change in weather from very cold to very hot lasted over a century.
C．The scientists have been studying ice to forecast the weather in the future.
D．The past 10,000 years have seen minor changes in the weather.

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单项选择题A．pressure from work can be reduced.B．working women can have more time at home.C．traffic and commuting problems can be solved.D．personal relationships in offices can be improved.

A．pressure from work can be reduced.
B．working women can have more time at home.
C．traffic and commuting problems can be solved.
D．personal relationships in offices can be improved.

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A．will end all other related trade conflicts.
B．is unlikely to solve the dispute once and for all.
C．is linked to other trade agreements.
D．is the last of its kind to be reached.