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【多选题】
特殊分化了的具有自动节律性的心肌细胞具有哪些生理特性( )A.
收缩性
B.
自律性
C.
兴奋性
D.
传导性
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反馈参考答案：
举一反三
【简答题】将H2S通入FeCl3溶液中，得不到Fe2S3沉淀。
【单选题】___ the piano is one of my favorite pastimes.
A.
Playing
B.
to play
C.
I play
D.
played
【单选题】He is the only one of the boys who _____ the piano well.
A.
plays
B.
play
C.
is playing
D.
are playing
【单选题】Langlang plays the piano very well. He is one of pianists in China.
A.
famous
B.
more famous
C.
most famous
D.
the most famous
【单选题】He is the only one of the boys who ____ the piano well.
A.
plays
B.
play
C.
playing
D.
are playing
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