女，45岁，劳累性呼吸困难、心悸1年余。体检：心尖区S1亢进及二尖瓣开放拍击声，并有舒张中晚期隆隆样递增型杂音，P2亢进，超声心动图显示二尖瓣呈城墙样改变，前后叶同向运动，开放受限，瓣口面积为0.8cm2。
作为二尖瓣瓣叶弹性及活动尚好的间接指标，应注意是否存在（）
A.喀喇音
B.开瓣音
C.喷射音
D.叩击音
E.扑落音
参考答案：B
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| The sound of the rain hitting the windows wakes me up and it sounds just exactly as it did 15 years ago, which reminded me of my girlhood. It was my second day of 1 and it was raining heavily. I could not 2 the habit I had at home , so I fell asleep right at my 3 . I woke up to find myself not in the classroom but carried on Dad's back. We were 4 home. It was the last time I felt 5 to him. After that, he never carried me or hugged me as other fathers did to their children. I was not bothered much by this 6 . I was proud of it, for I felt 7 and "grown up." However, there were times when I felt depressed by not having sought 8 from him. One day, I was writing Chinese characters as homework. I hated doing this more than anything. Dad came and stood behind me for a moment, 9 me scratching (乱涂,勾抹) the paper. Then he said, "This kind of writing needs 10 .Your writing is not strong enough. Press harder." I follow his 11 for the next two words, but 12 I could see little improvement, I followed my own method the 13 way. His advice did not improve my writing but our 14 . As I grew older, I found out that he had finished his 15 in Grade 6, which was the highest grade in town then, so he was considered to be a 16 . People used to ask him to write something to put on the walls, but he never felt very useful. He often said to me, "As you can see, this family is going to depend on you. We are 17 to improve you anything for your future .You have to get 18 to change the life for yourself." As a result of his 19 , I have 20 it through high school and through college. | ||||
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