单项选择题

When insomnia happens regularly, ______.

A．one had better do nothing but try to sleep
B．one Can cure himself by taking medicine
C．one had better see a doctor and follow the doctor's prescriptions
D．one can correct his bad habits so as to fall asleep again

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单项选择题

What is the main cure for insomnia according to the passage

A．Adjust the temperature of one's bedroom.
B．Take some sleepingpills before one goes to sleep.
C．Try to turn on the light and do some reading.
D．Not to get too worried about sleeplessness.

单项选择题

From the passage, we can know that the computer system can provide information of ______.

A．details about the burning building
B．invalids living in the burning building
C．medical records of every firefighter in the city
D．all of the above