109學測英文試卷-47

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<閱讀測驗>第45至48題為題組
47. What does “a **crucial time**”” in the last paragraph refer to?
(A) When the vessel hits a flat.
(B) When the channel is not deep enough.
(C) When there is a collision of two ships.
(D) When a ship is waiting to enter the port.”