皮皮学，免费搜题
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搜题
【单选题】
实现骨骼肌兴奋 - 收缩耦联的重要结构A.
三联管
B.
横管
C.
纵管
D.
肌细胞膜
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皮皮学刷刷变学霸
举一反三
【简答题】To make a living, he tried ____and various other things, but he had failed in all. (write)
【单选题】All the money he had had been ____, so he had to make a living by begging.
A.
used up
B.
taken up
C.
stayed up
D.
brought up
【判断题】In 1993, he started to make a living working for Columbia University as a janitor.
A.
正确
B.
错误
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