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问题 单项选择题

静脉尿路造影，压迫输尿管的压力一般为

A．40～50mmHg
B．50～60mmHg
C．60～80mmHg
D．80～100mmHg
E．100～120mmHg

答案

参考答案：D

解析：静脉尿路造影，由静脉注射缓慢注射对比剂20～40ml，即行气袋充气，加压至病人能耐受程度为止，一般为80～ 100mmHg，以能压迫输尿管使对比剂停留于肾盂、肾盏内为度。

完形填空

I used to be ashamed of my grandma. I know that's a 1　thing to say, but it was true until today, so I have to　2　it.
The  3 started when my friend Katy found Grandma's false teeth floating in a glass on the bathroom sink. I was so used to seeing them that I 4　 took notice of them. But Katy shouted, laughing and　5　 to talk to them. I had to get down on my knees and　6　　her to shut up so my grandma wouldn't　7　  and get hurt.
After that happened, I　8　 there were a million things about Grandma that were embarrassing（令人窘迫）.
Once she took Jill and me out to Burger King.　9　  ordering our hamburgers well-done, she told the person behind the counter, "They'll have two Whoppers (巨无霸) well-to-do. " Jill burst out laughing, but I almost　10　　.
After a while, I started wishing I could　11　 Grandma in a closet. I even complained to my parents. Both my parents said I had to be careful not to make Grandma feel　 12　 in our home.
Then last Wednesday, something happened that　13　 everything completely. My teacher told us to help find interesting old people and　14　  them about their　15　 for a big Oral History project. I was trying to think of someone when Angie pushed me gently.
"Volunteer your grandmother," she whispered. "She's　16　 and rich in experience."
That was the last thing I ever thought Angie would say about my grandma.
This is how I ended up on　 17　 today interviewing my own grandmother before the whole school assembly (集合). All my friends and teachers were listening to her　 18　 she was a great heroine. I was　 19　　of my grandma and hoped she would　20  know that I had been ashamed of her.
小题1:
A．funnyB．commonC．terribleD．clear
小题2:
A．admitB．receive　　　C．refuseD．show
小题3:
A．quarrel　　　B．accidentC．trouble　　　D．adventure
小题4:
A．already　　　B．alwaysC．simplyD．hardly
小题5:
A．enjoyingB．pretendingC．imaginingD．continuing
小题6:
A．warnB．demandC．advise　　　D．beg
小题7:
A．mindB．hearC．seeD．fall
小题8:
A．expectedB．declaredC．realizedD．doubted
小题9:
A．Because ofB．Except for 　C．Such asD．Instead of
小题10:
A．died 　　　　B．cheeredC．disappearedD．suffered
小题11:
A．meetB．avoidC．arrangeD．hide
小题12:
A．independent　B．inconvenientC．unwelcomeD．unfamiliar
小题13:
A．changedB．finishedC．stoppedD．Prepared
小题14:
A．interviewB．report 　　　C．tellD．write
小题15:
A．newsB．livesC．advantages　　D．achievements
小题16:
A．freeB．popularC．interesting　　D．embarrassing
小题17:
A．showB．stageC．dutyD．time
小题18:
A．and then 　　B．even if　　　C．so thatD．as if
小题19:
A．sureB．proudC．ashamedD．afraid
小题20:
A．never　　　　B．evenC．stillD．once
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单项选择题

圆形截面构件发生弯扭组合变形时，其第三强度理论的相当应力σr3的公式为（）。

A.A

B.B

C.C

D.D
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