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问题 填空题

过（3，-4）点的反比例函数关系式是______．

答案

设函数的解析式y=

k
x
，

∵点（3，-4）在反比例函数上，

∴k=3×（-4）=-12，

∴y=-

12
x
，

故答案为y=-

12
x
．

单项选择题 共用题干题

患者，女，55岁。三月前无明显诱因出现右上肢疼痛，以后症状逐渐加重，近2天，扫地、扭毛巾等细小的生活动作均感困难。体查：桡骨头附近有一局限性、极敏锐的压痛点

有关本病下列哪项论述是错误的（）。

A.本病又称为肱骨外上髁炎

B.用力握拳、伸腕时疼痛加重以致不能持物

C.桡骨头附近可有明显的压痛

D.病情严重时可有尺侧一个半手指的麻木

E.肘关节活动不受影响
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单项选择题

An old man visited a new doctor. He was very young. "I don’t feel well, doctor," he said, "Please find out what’s wrong with me."
"Take off your clothes and lie on the bed," the young doctor said, "I’ll examine you." The old man took off his clothes and lay down on the bed, and the young doctor examined him.
However, he couldn’t find anything wrong with the old man. He listened to his heart. He looked into his throat. He examined every part of him. At last he said, "I’m sorry, but I can’t find anything wrong with you. You’re as healthy as I am." "That’s very strange," the old man said, "because I feel really bad."
"Come back tomorrow and see me again if you don’t feel better." The young doctor said, "I’ll examine you again." "All right, doctor," the old man said. Slowly, he stood up and put on his clothes. Then he walked out of the hospital.

Who visited the new doctor
A. A young man. B. An old man. C. A young girl.

A few seconds later, the doctor’s nurse ran in. "Doctor! Doctor!" she cried. "That man you said was healthy has just died outside the door." The doctor thought quickly, "Then turn the body around so that people will think he was coming in," he said.
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