6. What is this article mainly about?
(A) A useful tool and how to use it.
(B) A fatal illness and how to stop it.
(C) A bad habit and how to break it.
(D) A technical skill and how to acquire it.
詳解 (共 1 筆)
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（A）一個有用的工具和如何使用它。（B）...
私人筆記 (共 1 筆)
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breakverbUK/breɪk/ U...
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