单项选择题

A．External noise.
B．Physiological noise.
C．The effect of a cold.
D．Psychological effect.
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单项选择题
A．Have a balanced diet, fresh air, sunshine, enough rest and regular exercise.B．Visit the doctor and go to hospital regularly.C．Spend enough time watching others exercising at home or in a stadium.D．Realize the importance of physical and mental health.
A．Have a balanced diet, fresh air, sunshine, enough rest and regular exercise.
B．Visit the doctor and go to hospital regularly.
C．Spend enough time watching others exercising at home or in a stadium.
D．Realize the importance of physical and mental health.
单项选择题
A．She doesn’t get what she wanted.B．She is given a vegetable salad.C．She finds the fruit not fresh enough.D．She has been overcharged.
A．She doesn’t get what she wanted.
B．She is given a vegetable salad.
C．She finds the fruit not fresh enough.
D．She has been overcharged.
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