“点M在曲线y2=4x上”是“点M的坐标满足方程y=-2x”的（ ） A．充分不必

男性，28岁。左侧阴囊内肿块半年，时有挤压痛。查体：左侧阴囊肿大，触之睾丸上部有一囊性肿块，牵拉睾丸可随之活动，挤压不变小，睾丸正常大小。透光试验阳性。诊断首先考虑（）。

A.睾丸鞘膜积液

B.精索鞘膜积液

C.交通性鞘膜积液

D.左侧斜疝

E.精液囊肿

I get off the bus and walk a few blocks. I stop when I get to a garage-like place and walk to the metal door with brown paint. I turn the knob(把手)and walk in. A thousand eyes look at me as I take my place at the end of the long line. When I finally get up to the window, I hand the officer my ID. “I’m here to visit Mr C. Yes, I’m his daughter.”

I learn that line by heart. The officer hands me a piece of paper with my name as the visitor and my father’s as the prisoner. It tells me which floor to go to. As I get on the elevator, a rush of excitement runs through me. Then I go to the eighth floor, look around and see the faces I see here every Sunday and Thursday.

There he is. I stand on tiptoe(脚尖)to get a better view since I can hardly see him. He doesn’t look like my father. He’s got a beard now and he looks a lot weaker. He’s the dad that I see through a window. My dad who is separated from the world. The only place he now knows is his room in the prison. When I look deep into his eyes, I see emptiness and pain.

It’s difficult to hear him through the thick glass and over everyone else who is trying to talk. We try to carry on a normal conversation about simple things including my day and what I’m doing in school, but we mostly talk about how we can’t wait until he gets out. After an hour my time is up. We say our good-byes and love-yous.

I get on the bus to go home. My favorite place is where my father is—prison. I know, how can prison be anyone’s favorite place? But it is because my father is there. It’ll no longer be my favorite place once he gets out, though—home will be.

小题1:The author goes to the prison_________.

A．to talk with the officer

B．to visit her father

C．to get a piece of paper from the officer

D．to pay a visit to her favorite place 小题2:It can be inferred from the passage that the author’s father is ____________.

A．working there for a long time

B．just in prison for a short while

C．still healthy and strong in prison

D．seldom keeping in touch with people outside小题3:What does the author mainly talk of with her father?

A．Her behavior in school.

B．Simple things in everyday life.

C．Difficulty and trouble in her life.

D．The feeling of expecting him home.小题4:What can we know from the passage?

A．The author’s father will never go home.

B．The author meets her father once a week.

C．The author’s favorite place will change.

D．The author hates her father.

什么叫变压器的不平衡电流？有什么要求？

患者，女性，48岁，1个半月前体检查血糖6.8mmol/L，BP155/100mmHg，BMI29.5kg/m²；余无异常。复查空腹血糖7.4mmol/L，餐后2小时血糖10.2mmol/L，酮体（-）。

关于该病人的BMI描述正确的是（）

A.消瘦

B.体重过轻

C.体重正常

D.体重过重

E.肥胖症

企业持有应收账款是有成本的，在众多成本之中，企业最关注的成本都是机会成本和坏账损失。