题目内容

Among traditional Chinese physical activities,______ may be the most representative and typical.

A. martial arts
B. horse racing

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_____is a popular school of Chinese martial arts marked with slow and gentle movements that are designed for defense, strengthening of physique and prevention of diseases.

A. Qigong
B. Tai chi chuan

下列哪种受体激动可使唾液腺分泌.

A. N受体
B. M受体
C. α受体
D. β受体

交感神经兴奋使心跳加快是因为激动了下列哪种受体.

A. β1受体
B. N受体
C. β2受体
D. α受体

小血管收缩、血压升高是激动了血管平滑肌上的哪种受体.

A. β1受体
B. N受体
C. β2受体
D. α1

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