题目内容
（请给出正确答案）
[主观题]
The voluntary decision to label seems to have been rewarded.A．paid outB．paid backC．paid up
The voluntary decision to label seems to have been rewarded.
A．paid out
B．paid back
C．paid up
D．paid off
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A．细胞膜
B．细胞液
C．细胞核
D．线粒体
E．内质网
腺苷酸环化酶位于
