海船船员
You are at sea in an inflatable liferaft．In high latitudes，the greatest danger is ______．A.asphyxiation due to keeping the canopy closedB.hypothermia caused by cold temperatureC.collapse of the raft due to cold temperaturesD.starvation
题目
You are at sea in an inflatable liferaft．In high latitudes，the greatest danger is ______．
A.asphyxiation due to keeping the canopy closed
B.hypothermia caused by cold temperature
C.collapse of the raft due to cold temperatures
D.starvation
相似问题和答案
第1题：
On a weather map, a large letter “H” means ______.
A.a high pressure area with cool, dry air, and fair weather
B.a high pressure area with warm, moist air, and inclement weather
C.horse latitudes, with rough seas and strong winds
D.a heavy squall line near the “H”
在天气图上大写字母H的意思是伴随阴凉，干燥和晴好天气的高压。
第2题：
The "horse latitudes" are regions of ______.
A.brisk prevailing winds
B.light airs and calms
C.abundant blue sea grass vegetation
D.None of the above
第3题：
A
The undersea world is very beautiful． Now more and more people want to dive in the water to find the secrets there． Scuba diving is a new sport today． It can take you into a wonder-ful undersea world．
You will find many strange animals in the sea． Some are as large as a school bus． Many sea animals give out light in the dark and some have sharp teeth．During the day， there is enough light． Here， under the sea， everything is blue and green．When fish swim nearby， you can catch them with your hands． When you have bottles of air on your back， you can stay in deep water for a long time． However， you can-t dive too deep． And you must be very careful when you dive in deep water．The deep sea is not an easy place to live in． It-s cold， and it，s dark， too． The deeper it is， the less sunlight there is． At about 3，000 feet， there is no light at all． It is very dark in the sea． Many fishes have no eyes． Some have big eyes． A few have eyes on one side． Besides the cold and the darkness， deep-sea animals face a third danger-other animals．
Animals eat! They must find food to eat． Many animals eat plants． However， some am-mals eat meat． This means these sea animals have two big jobs． They need to find animals as food， and they have to try not to become other animals' meal．
( )21． Why do people want to dive in the sea? Because ________ ．
A．they want to catch fish
B． they want to find the secrets of the undersea world
C． the sea is deep
D， there are all kinds of plants in the sea
21.B【解析】由第一段第二句可知
第4题：
______ are experienced in temperate latitudes during warm summer weather but rarely exceed Force 3 and may extend 10 to 15 miles on either side of the coastline．
A.Trade Winds
B.Winds of the temperate zones
C.Monsoons
D.Land and Sea Breezes
第5题：
What must be carried out in order to launch and inflate an inflatable liferaft?
A.Pull on the hydrostatic release，pull on the sea painter
B.Push on the hydrostatic release，pull on the sea painter
C.Push on the hydrostatic release，push on the sea painter
D.Pull on the hydrostatic release，push on the sea painter
第6题：
In order to retrieve an inflatable liferaft and place it on deck，you should heave on the ______.
A.lifelines
B.righting strap
C.sea anchor
D.towing bridle
第7题：
What is placed on the underside of an inflatable liferaft to help prevent it from being skidded by the wind or overturned?
A.Ballast bags
B.A keel
C.Strikes
D.Sea anchor
第8题：
The greatest danger is fatigue at the wheel. Some music can ________ you into concentration loss.
A contribute
B lull
C cause
D conduce
第9题：
In very high latitudes，the most practical chart projection is the ______．
A.Mercator
B.Gnomonic
C.Azimuthal
D.Lambert conformal
第10题：
The Sea
What do you know about the sea?We know that it looks very pretty when the sun is shining on it.We
also know that it can be very rough when there is a strong wind.What other things do we know about it?The
first thing to remember is that the sea is very big.When you look at the map of the world you will find there
is more water than land.The sea covers three quarters of the world.
The sea is also very deep in some places.It is not deep everywhere.Some parts of the sea are very shal-
low.But in some places the depth of the sea is very great.There is one spot,near Japan,where the sea is
nearly 11 kilometers deep!The highest mountain in the world is about 9 kilometers high.If that mountain
were put into the sea at that place,there would be 2 kilometers of water above it！What a deep place!
If you have swum in the sea,you know that it is salty.You can taste the salt,Rivers,which fi0w into the
sea.carry salt from the land into the sea.Some parts of the sea are saltier than other parts,There i、one sea,
called the Dead Sea,which is very salty.It is so salty that swimmers cannot sink!Fish cannot live in the
Dead Sea!
In most parts of the sea,there are plenty of fishes and plants.Some live near the top of the sca.Othurs
live deep down.There are millions of tiny living things that float in the sea.These floating things are so small
that it is hard to see them.Many fish live by eating them.
The sea can be very cold.Divers,who go deep down in the sea,know this.On the top the water may be
warm.When the diver goes downwards,the sea becomnes colder and colder. Another thing happens.When the
diver goes deeper,the water above presses down on him.It squeezes him.Then the diver has to wear clothes
made of metal.But he cannot go very deep.Some people who wanted to go very deep used a very strong diving
ship!They went down to the deepest part of the sea in it.They went down to a depth of eleven kilometers!
A:Right
B:Wrong
C:Not mentioned
第一段的最后一句话说海洋覆盖了地球四分之三的面积，由此可推知陆地只占地球 25％的面积。
第二段涉及大海的深度，但并没说到“平均深度”。
第二段说死海咸度大，鱼类不能生存，但并没说所有生物都不能生存。
第四段说在绝大多数海域，有丰富的鱼类和植物，有些生活在海洋表层，有些居住在深 海，因此说越往海洋深处鱼类和植物越少是没有道理的。
由第五段可知潜水员潜得越深，其承受的水压就越大。
文章结尾说潜水员潜往深水区时，乘坐极其坚固的潜水船是为了抵抗水压而不是为了 防寒。第3部分：概括大意与完成句子