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心传导系包括

A. 房室结
B. 冠状窦
C. 窦房结
D. 房室束
E. Purkinje纤维网

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A simple conversation.
B. The topic isn't important.
C. It doesn’t give many details.
D. It is full of many details.

A. Excited
Boring
C. Joyful
D. Cross

A. Free Time and Hobbies
B. Where are you from?
C. Family and Kids
D. Academic Project
E. The Common Interests

A. Close family
B. The family only includes the parents and their kids.
C. 核心家庭
D. The family will move away immediately.