扩张型心肌病的二维超声主要表现为
A．室壁增厚率增大
B．左心或全心扩大，室壁收缩运动幅度普遍减低
C．心室扩大，心房变小
D．室壁弥漫性增厚，室壁收缩运动幅度增大
E．左心室正常，左心房变小
参考答案：B
解析： 扩张型心肌病诊断要点：①各房室腔皆扩大，或以左心房、左心室扩大为主；②室壁运动普遍减低，左室收缩功能明显降低；③二尖瓣开放幅度低，呈“大心腔、小开口”的特征；④冠状动脉主干正常或稍宽，管壁光滑，腔内清晰；⑤二尖瓣或多组瓣膜反流；⑥无其他心脏病的阳性发现。
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| Like that of her own character, Harry Potter, J. K. Rowling's life is like a fairy tale. Divorced, living on public assistance in a tiny Edinburgh flat with her infant daughter, Rowling _1_ Harry Potter and The Sorcerer's Stone _2_ a table in a caf? during her daughter's naps-and it was Harry Potter _3_ rescued her. Rowling _4_ that she always wanted to write and that the first _5_ she actually wrote down, when she was five or six, was a story about a rabbit _6_ Rabbit. Many of her favorite _7_ center around readinghearing The Wind in the Willows _8_ aloud by her father when she had the measles (麻疹), enjoying the fantastic adventure stories of E. Nesbit, and her favorite story of all, The Little White Horse. At Exeter University Rowling took her degree in French and 9 one year studying in Paris. After college she moved to London to 10 as a researcher and bilingual secretary. The best thing about working in an office, she has said, was 11 up stories on the computer when no one was 12 . During this time, on a particularly long train ride from Manchester to London in the summer of 1990, the idea 13 her of a boy who is a wizard and doesn't know it. He 14 a school for wizardry-she could see him very plainly in her mind. By the time the train 15 into King's Cross station four hours later, many of the characters and the early stages of the plot were fully 16 in her head. The story took further shape as she continued working on it in 17 and caf?s over her lunch hours. After her marriage to a Portuguese TV journalist ended in divorce, Rowling returned to Britain with her infant daughter and a suitcase full of Harry Potter notes and 18 . She settled in Edinburgh to be near her sister and 19 to finish the book before looking for a teaching job. Wheeling her daughter's carriage around the city to escape their 20 , cold apartment, she would duck into coffee shops to write when the baby fell asleep. In this way she finished the book and started sending it to publishers. | ||||
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