问题
单项选择题
以下提供若干组考题，每组考题共用在考题前列出的A、B、C、D、E 5个备选答案，请从中选择一个与问题关系最密切的答案。某个备选答案可能被选择一次、多次或不被选择。
传导速度最慢的是
A．窦房结
B．心房肌
C．房室交界
D．心室肌
E．普肯耶纤维
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
以下提供若干组考题，每组考题共用在考题前列出的A、B、C、D、E 5个备选答案，请从中选择一个与问题关系最密切的答案。某个备选答案可能被选择一次、多次或不被选择。
传导速度最慢的是
A．窦房结
B．心房肌
C．房室交界
D．心室肌
E．普肯耶纤维
参考答案：C
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made up of 35 women, aged from 50 to 84. It was developed 2 a housewife five years ago to help old women keep fit. The project has been so successful 3 they will take part in the Veterans Cup competition (元老杯足球联赛) in the USA. "We are 4 to play in the Veterans Cup, where many grandmothers from all over the world come 5 and play football," said the team leader. Whatever happens, 6 , the grandmothers have no regrets. Most of them often play football in their aprons (围裙) after 7 . "I suffered back pain and sore knees (腰酸腿痛) before joining the team three years ago. Now I am fresh. I don't feel 8 pain in my body, and I can run. At home I do all the housework by myself!" said 9 of the grandmothers. 1. 2. 3. 4. 5. 6. 7. 8. 9. |