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【判断题】

无声电影又被称之为“默片”,是指电影胶片本身不能发出声音的电影。

A.
B.
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参考解析:
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【单选题】Music to My Ears When other shad doubts, my father believed in me. As a boy growing up in Shenyang, China, I practiced the piano six hours a day. I loved the instrument. My mother, Xiulan Zhou, taught...

A.
The whole family moved to Beijing.
B.
He and his father went to Beijing to learn piano.
C.
His mother got iii.
D.
His family objected to his learning in Beijing.

【单选题】人耳最敏感的声音频率范围是

A.
16~20 000 Hz
B.
50~5 000 Hz
C.
300~5 000 Hz
D.
1 000~4 000 Hz