单项选择题

From the passage, insomnia results from ______.

A．interruption of the ordinary sleep pattern
B．being unable to sleep
C．keeping awake at night
D．drugs to treat a special disease
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单项选择题
What's the main reason for big cities to build their own recycling plants
A．To deal with waste in a better way.
B．To protect the environment from pollution.
C．To get raw materials locally.
D．To get big profits from those plants.
单项选择题
The phrase be well on their way to (L.1, Para.1) most probably means ______.
A．have completed what was started
B．have gotten ready to start
C．have achieved a great deal toward
D．have put an end to
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