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Practice Listening: Select Missing Word ID: #41068 Short A canal
Instructions ›
You will see a video explaining the function of canal locks. At the end of the recording the last word or group of words has been replaced by a beep. Select the correct option to complete the recording.

Transcript:

A canal connects two bodies of water that may have different water levels. Ships travelling through the canal move from one water level to another through a lock, a rectangular chamber with watertight gates at each end. In the lock, the level of water can be raised and lowered by a system of valves and water passages. Suppose a ship is traveling from the higher water level to the lower. First, an operator at a nearby station opens the lock gates at the high end, the ship enters the lock, and the lock gates are closed. Next, the lock operator opens one or more valves so that water from the lock slowly drains into the lower section of the canal. When the water in the lock is level with the lower water, the operator opens the gates, and the ship sails through. To move a ship upstream, the procedure is (reversed).
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Result:

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Option 2: "reversed"

Explanation: The text explicitly states that to move a ship upstream, the procedure is 'reversed.' This directly connects to the overall theme of the text, which explains the process of moving ships through a canal and how the actions differ depending on the direction of travel.

Option 1: "initiated"

Explanation: The term 'initiated' suggests starting a process, but the context of the text describes a procedure that is being reversed when moving a ship upstream. Therefore, this option does not align with the text's description of the process.

Option 3: "expanded"

Explanation: The word 'expanded' implies making something larger or broader, which does not fit the context of the text. The process described involves changing water levels and moving ships, not expanding any physical aspect.

Option 4: "complicated"

Explanation: The term 'complicated' suggests that the process is made more difficult or intricate. However, the text describes a straightforward procedure for moving ships, and using 'complicated' would misrepresent the clarity of the described actions.

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