A tuning fork is a narrow, two-pronged steel bar that when tuned to a specific musical pitch retains its tuning almost indefinit

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问题 A tuning fork is a narrow, two-pronged steel bar that when tuned to a specific musical pitch retains its tuning almost indefinitely.

选项 A、uncertainly
B、inaudibly
C、endlessly
D、magically

答案C

解析无限地，无穷尽地

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职称英语卫生类C级

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