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问题 单项选择题 A1型题

T管拔除最重要的指征是（）

A.无引流液引出

B.引流液颜色正常

C.大便颜色正常，食欲好转

D.黄疸逐日消退，无发烧、腹痛

E.T管造影无残余结石，夹管试验无异常变化

答案

参考答案：E

填空题
选词填空，根据文章内容，选用所给单词的适当形式填空。其中有两个是多余的。
they，be，tell，luck，slow，say，order，come，take，put，he，watch
A little old man and his wife walked 小题1: into McDonald’s on one cold winter evening. They took a table near the back wall, and then the little old man walked to the cashier(收银处) 小题2: food. After a while, he got the food back.
There 小题3: one hamburger, some French fries and one drink. The little old man carefully divided the hamburger in half and the French fries into two piles. Then he neatly    小题4: the half of the food in front of his wife. Both he and 小题5: wife took a sip(一小口) of the drink. “How poor the old couple was!” the people around them might think. As the old man started to eat his hamburger and his French fries, his wife sat there  小题6:  him. They took turns to drink. A young man  小题7: over and offered to buy another meal for  小题8:. But they refused politely and said they got used to sharing(分享) everything.
Then a young lady asked the wife. “Excuse me, Madam. Why aren’t you eating? You   小题9:  that you shared everything. Then, could you 小题10: me what you are waiting for?” She answered in a smile, “The teeth.”
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问答题

两位同学用电压表和电流表测量定值电阻Rx的阻值．他们选用的实验仪器有：满足实验要求的电流表、电压表、滑动变阻器、开关、待测电阻Rx，电压恒定为6V的电源各一个，导线若干．连接好电路后，闭合开关，调节滑动变阻器滑片，分别记录了三组实验数据并计算得到下表：

电压U/V电流I/A电阻R/Ω
4.50.1
3.00.215
1.50.35
（1）请根据这两位同学的实验数据计算第一次实验电阻的阻值并填入表中；

（2）依题意通过分析实验数据，请你指出实验中的问题：______；

（3）根据你对实验数据的分析，你认为待测电阻的阻值是______Ω．
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