单项选择题

A．Winding the watch.
B．Stopping the watch.
C．Setting the watch by the radio.
D．Asking Mary about the time.
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单项选择题
Public schools are softening their position on home schooling because________.
A．there isn’’t much they can go to change the present situation
B．they want to show their tolerance for different teaching systems
C．home schooling provides a new variety of education for children
D．public schools have so many problems that they cannot offer proper education for all children
单项选择题
On the basis of their models, scientists are of the opinion that______.
A．the climate of the world should be becoming cooler
B．the new Ice Age will be delayed by the greenhouse effect
C．the man-made warming effect helps to increase the solar effects
D．it will take thousands of years for the inertia of the earth’’s climate to take effect
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