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單項(xiàng)選擇題

This is（）where we shall anchor.

A.the light-house
B.the anchorage
C.the pilot station
D.the light-buoy

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單項(xiàng)選擇題

There is sufficient anchorage for（）at all time around the No.1 buoy and for smaller vessels around the No.4 buoy.

A.deep laded vessels
B.deeply load vessels
C.deep loading vessels
D.deeply loaded vessels

單項(xiàng)選擇題

The shortest distance between any two points on earth defines a（）.

A.small circle
B.great circle
C.rhumb line
D.hyperbola