问题
单项选择题 A型题
强心苷治疗房颤的机制主要通过（）
A.降低浦肯野纤维自律性
B.延长心房有效不应期
C.抑制窦房结功能
D.抑制房室结传导
E.缩短心房有效不应期
答案
参考答案：D
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强心苷治疗房颤的机制主要通过（）
A.降低浦肯野纤维自律性
B.延长心房有效不应期
C.抑制窦房结功能
D.抑制房室结传导
E.缩短心房有效不应期
参考答案：D
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She was a dancer at first. But one day she thought that she could also sing 2 . So she went to visit a music teacher. The teacher 3 her to sing a few songs and then said that she would not be successful in singing, 4 she didn't have a good voice. 5 Zhu Mingying didn't give up. She spent a lot of time 6 to music lessons. She had 7 time to rest. She didn't have much money to buy 8 delicious food. Life was really hard for her at that time. But Zhu Mingying felt happy, because she proved (证明) she herself could be a good singer at last 9 she practiced singing for many years. If you want to do something, just 10 . You'll be successful in the end! |