When his young son was ill, Mr. Wei took him to a clinic( 诊所 ). They were the first of the day and did not have to wait long. The nurse took the boy into the doctor’s room while Mr Wei waited outside. After a few minutes, the doctor came out of his room and spoke to the nurse. “Have we got a screwdriver( 螺丝刀 )?”he asked her. The nurse looked in a drawer( 抽屉 ) and found a screwdriver. She gave it to the doctor and he went back into his room. A few minutes later he came out again. “I need a saw( 锯 ), ”he said to the nurse this time. Again the nurse looked in the drawer. She found a saw and gave it to the doctor. He went back into his room. A few minutes later the doctor came out of his room for the third time. “I’m going to need a hammer, ” he said. For the third time the nurse looked in the drawer. She found a hammer and gave it to the doctor. This time, Mr. Wei could not keep quiet. “Excuse me, ”he said, “but what is wrong with my son? And what are you doing to him?” “I haven’t examined him yet. ”the doctor said. “I’m still trying to get my bag open.”