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【单选题】
In order for a new sport _______, a current sport must be dropped.A.
to add
B.
to be added
C.
adding
D.
added
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皮皮学刷刷变学霸
举一反三
【单选题】excitation of γ motor neuron will induce
A.
contraction of extrafusal fiber
B.
relaxation of intrafusal fiber
C.
increase of the sensitity of the sensory receptors in muscle spindle.
D.
decrease of impulse on Ia afferent fiber.
E.
decrease of the impulses of the α motor neuron.
【单选题】excitation of γ motor neuron will induce
A.
increase of the sensitity of the sensory receptors in muscle spindle.
B.
contraction of extrafusal fiber
C.
relaxation of intrafusal fiber
D.
decrease of impulse on Ia afferent fiber.
E.
decrease of the impulses of the α motor neuron.
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