问题
多项选择题
风湿性二尖瓣狭窄时，在超声上可表现为
A．二尖瓣瓣环钙化比瓣叶更明显
B．二尖瓣叶交界处粘连硬化
C．二尖瓣口面积缩小
D．二尖瓣腱索硬化，缩短、粘连
E．二尖瓣柔软并收缩期向左房脱垂
答案
参考答案：B,C,D
搜题请搜索小程序“爱下问搜题”
风湿性二尖瓣狭窄时，在超声上可表现为
A．二尖瓣瓣环钙化比瓣叶更明显
B．二尖瓣叶交界处粘连硬化
C．二尖瓣口面积缩小
D．二尖瓣腱索硬化，缩短、粘连
E．二尖瓣柔软并收缩期向左房脱垂
参考答案：B,C,D
(2013·高考重庆卷，A)When Joe was about to start school，all signs pointed to success.Yet things turned out to be quite___.The fourth grade even found him at the___of the class.Joe struggled day and night，but it did not____－until one stormy afternoon. On that afternoon，____the math teacher started to introduce difficult concepts，dark clouds covered the sky，and the storm set in.Hard though she tried to make the kids____，the thunder won the battle for their attention.No one____the concepts.Except for Joe.He understood them and answered all the questions correctly.The teacher patted him on the back，and told him to go around to the others and explain how he had managed it.____by his newfound success，Joe moved quickly throughout the room.Soon math time was followed by the time for____.All children naturally drew____pictures on such a day.Except for Joe. Since then，Joe started____.Though he never made it to the top，his math teacher was always____and curious about the change：Why had that stormy day changed Joe? On the day Joe graduated，he presented the teacher with his most____possession－the picture of a bright yellow sun.On the picture Joe had written：This is the day I____my brightness.
|