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is the body's tiniest skeletal muscle.

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The English expression for 躯体神经系统 is.(three words)

The English expression for 自主神经系统 is.(three words)

A sprinter needs more fast twitch fibers to pick up pace.

A. 对
B. 错

Slow twitch fibers are more enduring than fast twitch fibers

A. 对
B. 错