不要电脑翻译
The Right Reason
one cold day a biology beacher sent for a school doctor.when the doctor came,she told him that her right leg was very sore at the knee.the pain sometimes was bad enough to make walk diffcult.she asked him what the trouble could be as she had never before suffered any similar discomfort.
after making a careful examination,the doctor said."you are in very good state of health for a woman of your age.i think the trouble in your right knee is just a matter of old age.we get diseases as we get older. the trouble will almost certainly clear up in spring!"
"nonsense,doctor!"she said"my left knee is perfect,and it is exactly the same age as my right"