单选题：Scientists does not know all the answers about the effects o

题目内容：

Scientists does not know all the answers about the effects of music on humans. A．Right
B．Wrong
C．Not mentioned

参考答案：

答案解析：

It's hard for humans to compose music.

It's hard for humans to compose music.A．Right B．Wrong C．Not mentioned

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The key components of a computer mouse are the two LEDs.A．Right B．Wrong C．Not me

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Recent studies have suggested that weight trainingA．has become an essential part

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