题目内容

I wanted a clean break, and I knew I needed to ____(离开) my usual environment and influences so as to think clearly about where I was headed.

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____(尽管) what others might have thought, I was not running away from something but to something.

Instead of reading novels and calling home regularly, I took the time to ____(参加) different activities that would make me change.

I believed ____(真心实意地) that I could change, if only I could find a quiet place to sort things out and experiment with new ways of thinking and acting.

心室肌细胞动作电位的2期复极形成与下列哪种因素有关

A. Na+内流与Ca2+内流
B. Na+内流与K+外流
C. K+外流与Ca2+内流
D. Ca2+内流与Cl-内流

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