问题
单项选择题
患者女性，51岁，风心病二尖瓣狭窄并关闭不全20年，房颤4年。无高血压及高脂血症病史。3h前在家做饭时突然跌倒在地伴失语。最可能的原因是（）
A.脑出血
B.脑血栓
C.脑动脉硬化
D.脑血肿
E.脑栓塞
答案
参考答案：E
解析：房颤引起心房血栓，栓子脱落引起脑栓塞。
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患者女性，51岁，风心病二尖瓣狭窄并关闭不全20年，房颤4年。无高血压及高脂血症病史。3h前在家做饭时突然跌倒在地伴失语。最可能的原因是（）
A.脑出血
B.脑血栓
C.脑动脉硬化
D.脑血肿
E.脑栓塞
参考答案：E
解析：房颤引起心房血栓，栓子脱落引起脑栓塞。
Megan's Library of Love book drive began in 2006, in memory of a student who passed away. The_ 21__ to send books to a school _22 _was created by Megan's classmates at Cedar Grove-Belgium Middle School as a tribute（悼念）to her. The project formed out of the desire to23 _Megan, to help our community heal, and to make a _24__ in the life of others. Students have many 25_ of Megan, but the most vivid was her love for her family and the diligent 26__ she gave to her classmates. They combined this with her _27_ for learning and reading to create the Library of Love. This project honors Megan's special qualities. In the _28__of one of her classmates, Megan was, “A good daughter, a good student, a good friend. ”We are all blessed to have been a _29_ of Megan's life. Every February, on Megan's birthday, fifth graders at Cedar Grove-Belgium Middle School _30 _donations of newly purchased books and send them to a school in need. The “Love books” are truly a __31__ of love meant to _32_ reading and learning. Students earn the money for postage by writing letters to local _33 _.The fifth graders also have the _34_ of labeling every book with a Library of Love sticker（标签）, _35_ the books into categories（类别）, and _36_ all the books for shipping. In the two years since the Library of Love _37 _began, students have collected over 5000 newly purchased books to send to schools in need. In 2006, 3419 books were sent to St. Bernard's Parish to help _38 their school library after Hurricane Katrina destroyed the community. In 2007, 1613 books were sent to White Mountain School in Alaska, who _39 _their high school in a fire. Students look forward to sending the gift of _40 _to other schools in the future.
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