单项选择题

Which of the following statement is true according to the text

A．Tranquillizers and sleeping pills can be used to cure insomnia.
B．Only the situational factors will affect our sleeping.
C．Stimulating drinks can force us to fall asleep.
D．We can decide how many sleeping pills to take on our own.
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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
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.
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