问题 单项选择题

肺动脉瓣关闭不全最常见的病因是

A.特发性肺动脉扩张

B.继发于肺动脉高压所致肺动脉扩张

C.肺动脉瓣病变如风湿性心脏病

D.感染性心内膜炎致肺动脉瓣穿孔

E.梅毒性肺动脉炎致肺动脉根部扩张

答案

参考答案:B

解析:[考点] 肺动脉瓣关闭不全病因[分析] 风湿病侵犯肺动脉瓣极少见,最常见的病因是继发于肺动脉高压的肺动脉干根部扩张,引起瓣环扩大发生肺动脉瓣关闭不全,如风心病二尖瓣狭窄者。其他少见病因是特发性和Marfan综合征的肺动脉扩张。

单项选择题
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One day, Jack threw some papers on my desk. “What’s wrong?” I asked. “Next time you want to change anything, ask me first,” he said, and left. I had made just one small change. But it’s not that I hadn’t been warned. My colleagues had said he was responsible for the resignations of the two previous secretaries. As the weeks went by, I came to look down on Jack.

After another of his episodes had left me in tears I stormed into his office. “what?” he said suddenly. “Jack, the way you’ve been treating me is wrong. I’ve never had anyone speak to me that way. As a professional, it’s wrong for me to allow it to continue,” I said. Jack smiled nervously, “Susan, I make you a promise that I will be a friend. I will treat you as you deserve to be treated, with respect and kindness.”

Jack avoided me the rest of the week, and never questioned my work again. I brought cookies to the office one day and left some on his desk. Another day I left a note: ”Hope your day is going great. ” Over the next few weeks, there were no more Jack episodes. One year later

I discovered I had breast cancer, and was scared. The statistics were not great for my long-term survival.

One day, however, Jack visited me in the hospital and silently handed me a bundle with several bulbs inside. “Tulips(郁金香),” he said. I smiled, not understanding. “If you plant them when you get home, they’ll come up next spring. I think you will be there to see them when they come up. Next spring you will see the colours I picked out for you.” Tears clouded my eyes and he left. I have seen those red and white striped(有条纹的) tulips push through the soil every spring for over ten years now. This past September the doctor declared me cured. At a moment when I was praying for just the right word, a man with very few words said all the right things. After all, that’s what friends do.

小题1:Jack became angry that day because__________.

A.he was feeling unwell

B.Susan had failed to keep his office clean

C.he felt Susan changed too much about the papers

D.Susan had changed something without his permission小题2:Susan stormed into jack’s office to tell Jack that__________.

A.he wasn’t worthy of respect

B.he should apologize to her right away

C.she would treat him the way he treated her

D.one should show others respect and kindness小题3:Which of the following describes Susan?

A.Moody but firm.

B.Shy and demanding

C.Confident and friendly.

D.Tough and troublesome.小题4:From the passage, we can conclude that__________.

A.Jack cares about his employees

B.Jack gets along well with his employees

C.Jack is always particular about his work

D.Jack doesn’t care about the feelings of others小题5:We can infer from the passage that__________.

A.a friend in need is a friend in deed

B.a few words can be as meaningful as many

C.a friend who says little must be a good friend

D.we must treat disrespectful people with disrespect