单项选择题

Lack of sleep can lead to ______.

A．a sudden change in lifestyle
B．good bodily condition
C．the habit of falling asleep in front of the television
D．a quick drop in both physical and mental condition

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热门试题

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

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.