问题
单项选择题
主动脉瓣关闭不全，最常见的病因是（）
A.风湿性
B.先天性
C.感染性心内膜炎
D.退行性心脏瓣膜病
E.梅毒
答案
参考答案：A
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主动脉瓣关闭不全，最常见的病因是（）
A.风湿性
B.先天性
C.感染性心内膜炎
D.退行性心脏瓣膜病
E.梅毒
参考答案：A
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。 My ears are recently full of praising words from my friends such as, “ Oh, Beckham is so handsome, so cool that I can’t help falling in love with him!” or “What perfect skills he has!” Yeah,—I ______ to some degree, though I sometimes do want to______ them how much they know about Beckham, apart from his______ and how much they know about football apart from______ goals. It seems funny that we are______ about things, with which we are unfamiliar or about which we are______, but we all, my friends as well as I, consider this one of life’s______. We need these pleasures to______ our lives. But that doesn’t______ to craziness or nonsense. As an old saying goes: “ Don’t judge a book by its cover.” We______ not judge anything from its appearance. We should all know, it is one’s good______ and great contribution that make one a star and unforgettable. Therefore we’d better say______ about Beckham’s good looks. If we close our eyes, falling in deep______, we can find that the things that move us to be really happy or sad have a______ meaning. If we don’t go deeper and are just satisfied with______ things, sooner or later we will find that we have not really gained anything because our first______ has blinded and misled us, and we’ll remain ignorant______ we realize that and make some changes. It is believed that thinking and going deeper than before is______ of great progress. If one day we are willing to go deeper into everything, no matter how much it______ us, we will finally prove how much we have______ up, how much more sensible, mature , and intelligent we have become.
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