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單項(xiàng)選擇題There is another thing I want to let you know. The lighting in the hold is very poor, even（）dark to work the cargo.

A.if
B.very
C.too
D.very much

1.單項(xiàng)選擇題There is not（）depth of water around the area centered at the lighthouse.

A.ample
B.sufficient
C.enormous
D.incredible

2.單項(xiàng)選擇題There shall be two principal（）through the harbor for the passage of vessels of over 60 tons burden.

A.straits
B.channels
C.canals
D.roadsteads

3.單項(xiàng)選擇題This new method not only saves time but also saves energy（）operating on two batteries instead of four.

A.in
B.by
C.on
D.for

4.單項(xiàng)選擇題This Rule does not relieve the give-way vessel（）her obligation to keep out of the way.

A.out
B.off
C.from
D.of

5.單項(xiàng)選擇題This system is only applicable（）those ships which are anchored at the roadstead waiting for entry.

A.to
B.for
C.with
D.on