问题
多项选择题
心迷走神经
A．其节前纤维起源于延髓
B．与心内神经节形成突触联系
C．节前神经纤维递质为乙酰胆碱
D．节前神经纤维递质为去甲肾上腺素
E．节后神经纤维递质为乙酰胆碱
答案
参考答案：A,B,C,E
解析：交感神经和副交感神经节前纤维释放的递质均为乙酰胆碱；其余均正确。
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心迷走神经
A．其节前纤维起源于延髓
B．与心内神经节形成突触联系
C．节前神经纤维递质为乙酰胆碱
D．节前神经纤维递质为去甲肾上腺素
E．节后神经纤维递质为乙酰胆碱
参考答案：A,B,C,E
解析：交感神经和副交感神经节前纤维释放的递质均为乙酰胆碱；其余均正确。
From the time I was seven, I had a dream of becoming a member of the Students Union. I always my school leaders for taking responsibility for all of us. So I dreamed of being a leader. Years flew by, and soon I was able to take part in the elections(选举), I would win. But the reality proved that I hadn't had a chance. I wasn't pretty. Girls in the school hardly knew me. I just did not have what it to win a school election. I was . As I cried in my room that evening, I suddenly took a deep breath and decided I wouldn't stop dreaming. I decided that I would for elections again in my final year at school—and I would the election. I recognized that my had a lot of things in their favor. What were in favor? I had good grades, and I was friendly and helpful. And my biggest was the faith I had. I would not allow my plain appearance to hold me from my heading forward. That evening, I my election plans a whole year ahead of time. I realized that girls would have to get to know me and recognize that I had the ability to them. I loved making friends and I liked being helpful, I decided that perhaps I could use these qualities to win. In order to learn how to give a great election , I also attended a course on effective public speaking. The day after the election, when the headmaster announced I won the second highest number of votes, the students . That joy on the faces of all my friends showed me that my victory was theirs. Suddenly, I realized that I had much more than I had dreamed of. I had made many new friends and had helped people along the way. I had won the and love of my schoolmates and they me as somebody who would stand by them. I was able to put a smile on their faces and their day.
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