第1题：
It __________ according to where you live, and this is a very rough estimate
[A] shifts
[B] converts
[C] modifies
[D] varies
选D
习惯用法，固定搭配。
第2题：
When a vessel is entering or leaving a port，a record of engine speeds is kept in the ______.
A.bell book
B.deck rough log
C.Official Logbook
D.engine rough log
第3题：
The sea looks very pretty when the sun is shining on it. It can be very rough when there is a strong wind. The sea is very big. It covers three quarters of the globe! The sea is also very deep in some places. There is one spot near the Philippines , where the sea is about 11 kilometers deep. The highest mountain in the world is about 9 kilometers high. If that mountain was put in the sea at that place, there would still be 3 kilometers of water above it! What a deep place! In most parts of the sea, there are plenty of fishes and plants. Some live near the top of the sea. Others live deep down. There are millions of tiny living things that float in the sea. Many fish live by eating them. The sea can be very cold. When the diver goes downwards, the sea becomes colder and colder. When the diver goes deeper, the water exerts greater pressure.
1、There is one spot near the Philippines, where the sea is as deep as ( ).
A、13 kilometers
B、 9 kilometers
C、 2 kilometers
D、 11 kilometers
2、There are millions of tiny living things that float in the sea, and( ).
A、they live by eating fish
B、they live by eating plants
C、they are good food for many fish
D、they live by eating worms
3、Which of the following statements is true? ( )
A、When the diver dives under the sea, he gets colder and colder.
B、When the diver sinks to the bottom, he is to be colder and colder.
C、When the diver sinks in the sea, he will be rather cold.
D、When the diver dives downward, the sea gets colder and colder.
4、From the information given, why has the diver to wear a diving suit? ( )
A、Because the diver is likely to be attacked by fish.
B、 Because the water at great depths is very cold.
C、 Because the salt water seems unsuitable for diver.
D、 Because the pressure of water at great depths is immense ( 巨大的 ).
第4题：
You are heading into the sea during rough weather．Having too much weight forward can cause your small boat to ______．
A.Broach
B.Plunge into the wave
C.Rise rapidly over the wave
D.List
第5题：
The 3-cm radar as compared to a 10-cm radar with similar specifications will ______.
A.give better range performance in rain，hail，etc
B.display small targets in a mass of dense sea clutter at a greater range
C.have less sea return in choppy rough seas
D.display a more maplike presentation for inshore navigation
第6题：
________ causes strong winds and rough sea at northwest Bay of Biscay．
A.Strong low pressure
B.Strong high pressure
C.Steep pressure gradient
D.Steep gradient pressure
第7题：
When oil is discharged overboard，an entry is required in the ______.
A.engine rough log
B.Oil Record Book
C.Official Logbook
D.deck rough log
第8题：
A、by sea, at sea
B、by the sea, at the sea
C、by the sea, at sea
D、by sea, at the sea
第9题：
When weighing anchor in a rough sea，how would you avoid risk of damaging the bow plating ________．
A.Heave it home as fast as you can
B.Heave it home intermittently，between swells
C.Leave the anchor under foot，until the vessel may be brought before the sea
D.Wait for a calm spot between seas，then house it
第10题：
______causing strong winds and rough sea north west Bay of Biscay.
A.Strong low pressure
B.Strong high pressure
C.Steep pressure gradient
D.Steep gradient pressure