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【单选题】
假设某一细胞的静息电位水平为-70mv，受刺激后该细胞的膜电位变为-50mv，这个过程称为（）。A.
去极化
B.
复极化
C.
超极化
D.
反极化
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皮皮学刷刷变学霸
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A.
C 2 H 4
B.
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C.
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D.
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A.
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E.
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【单选题】She has fallen in love with Jack, _______ find hard to imagine.
A.
who
B.
that
C.
whom
D.
which