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The meaning of ebb tide is that ______.
A.tide is falling from high water to low water
B.tide is rising from low water to high water
C.tide is reaching to a highest level
D.tide is reaching to a lowest level
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单选题The meaning of ebb tide is that （）.A
tide is falling from high water to low waterB
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tide is reaching to a lowest level
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单选题The period at high or low tide during which there is no change in the height of the water is called the （）.A
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plane of the tideC
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