风心病左房室瓣狭窄病人随右心衰竭的加重，下列各项中，哪项临床表现将减轻（） A.肝大

阅读下面的文字，根据要求作文。
“文明”是具有较高文化的状态，“野蛮”是指蛮横残暴的行为或不文明的状态。“文明与野蛮”既可以指人的具体行为的特点，也可以指人类历史、社会的特点。请以《文明与野蛮》为题写一篇以议论为主的文章，不少于800字。

已知m-n=3，那么6-2m+2n=______．

给水系统无水箱(罐)时，水泵的扬程应满足()。

A、水箱进水所需水压

B、最不利处的配水点或消火栓所需水压

C、消火栓所需水压

D、水箱出水所需水压

a. How could I excite my students and show my warmth, so that they could enjoy their study in English I had a deep thought. b. In order to save my face,I just criticized them seriously whenever they talked in class or even moved a little c. It was smile. There was a kindness called smile. It was the most beautiful language in the world. It could make distance disappear. d. Then I realized my frozen eyes made the students seared and my aerious face took any excitement away from the children’s hearts. e. The next day,I stood on the stage with a smiling face, asking questions with a smile and encouraging the children in a friendly way. I could find happiness and excitement in their eyes ! f. I could control the class now, but the atmosphere became strange. No, they were not listening to me. g. It was too quiet. The breathless silence urged me to consider the way I was teaching. h. I remember,five years ago, when I stood at the teacher’s desk for the first time, the students in my class paid no attention to me,didn’t behave themelves at all. I felt helpless. i. Gradually,they got used to my smile and encouragement. The class became a lovely one. I was moved,and said , "Thank you for listening,boys and girls!" j. "Just awake the students with a smiling face"I said to myself.

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