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问题 单项选择题 A1/A2型题

医学行为是否有利于医学科学发展和揭示人类的生命奥秘是（）

A.医德评价的经济标准

B.医德评价的科学标准

C.医德评价的社会标准

D.医德评价的人文标准

E.医德评价的医疗标准

答案

参考答案：B

完形填空

In the days when an ice cream cost much less, Tom, ___小题1:   __8-year-old boy, entered a hotel coffee shop __小题2:  sat at a table. A waitress put a glass of water in front of him. “How much is an ice cream?” “Fifty-cents,” replied the waitress. The little boy pulled __小题3:_ right hand out of the pocket and studied a number of 小题4:  in it. “How much is a dish of plain ice cream?” he asked. Some people were now waiting for her service and the waitress grew a bit __小题5:    _ (patience). “Thirty-five cents.” she said __小题6:_   (rude). The little boy carefully counted the coins __小题7:___.“I will have a plain ice cream,” he said. The waitress walked _小题8:   __ __. The boy finished the ice cream, paid the cashier and left. It was not long 小题9:  __  the waitress came back and then she began to wipe down the table and suddenly was surprised at what she saw. There, _小题10:  __ (place) neatly beside the empty dish, were two nickels and five pennies — her tip!
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计算题

如图甲所示电路，电源电压为6V不变，滑动变阻器的滑片P从a端移动到b端，定值电阻R1两端的电压随滑动变阻器R2阻值变化的图像如图乙所示。问：

（1）当R2为10Ω时，电压表的示数是多少？

（2）当电压表示数为2V时，R1的阻值是多少？

（3）滑动变阻器的滑片P在b端时，电阻R1的功率是多少？
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