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單項(xiàng)選擇題

The Loran needs（）.

A.repairing
B.to repair
C.repairs
D.have repaired

單項(xiàng)選擇題

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