1 We learn from the first paragraph that laughter
A is good for one's health.B is related to some illness.
C has been investigated long since.D has no effect on the body.
2 Doctors have found that laughter
A keeps down blood pressure.B has similar effects to physical exercise.
C decreases the heart rate.D increases stress.
3 Which of the following statements is NOT true of laughter， according to the passage?
A It reduces pain，B It exercises the body.
C it improves the body's immune system.D It can cure cancer.
4 In a laughter clinic， doctors
A laugh at their patients.B encourage their patients to laugh.
C smile when they don't feel like laughing.D never stop laughing.
5 The writer's attitude towards laughter is
A critical.B doubtful.C positive.D negative.
【参考答案】
1. A 2. B 3. D 4. B 5. C
