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

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

admin2012-07-30  62
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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