深海（deep sea）
深海（deep sea）
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AThe 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 fishB． they want to find the secrets of the undersea worldC． the sea is deepD， there are all kinds of plants in the sea
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 kilometersB、 9 kilometersC、 2 kilometersD、 11 kilometers2、There are millions of tiny living things that float in the sea, and( ).A、they live by eating fishB、they live by eating plantsC、they are good food for many fishD、they live by eating worms3、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 ).
They went to Japan (). Now they must be (). A、by sea, at seaB、by the sea, at the seaC、by the sea, at seaD、by sea, at the sea
29． Which of the following is NOT true?A． In 1884，George Eastman invented a kind of film．B． Deep-sea divers take pictures of ocean plants and animals．C， The films were developed by the owners of the cameras in the pastD． Astronauts use cameras to take f，photos in space
A sea anchor is ______.A.a heavy anchor with an extra long line used to anchor in deep waterB.a cone shaped bag used to slow down the wind drift effectC.a pad eye to which the sea painter is made fastD.made of wood if it is of an approved type
Generally speaking，the heavier cargo will go into the ______，distributing it evenly fore and aft，the lighter cargo will probably be placed in the ______．A.Deep tanks/lower holdsB.Lower holds/tweendecksC.Tweendecks/deep tanksD.Deep tanks/tweendecks
The purpose of mentioning the Weddell Sea is___________.A.to give an example of cold-water salinityB.to point out the location of deep watersC.to make a comparison between hot-water salinity and cold-water salinityD.to show that the water in the Weddell Sea varies in salinity from place to place
共用题干The SeaWhat 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 mountainwere 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 theDead Sea!In most parts of the sea,there are plenty of fishes and plants.Some live near the top of the sca.Othurslive deep down.There are millions of tiny living things that float in the sea.These floating things are so smallthat 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 bewarm.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 clothesmade 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!The sea is 6 kilometers in depth on average.A:RightB:WrongC:Not mentioned
共用题干The SeaWhat 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 mountainwere 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 theDead Sea!In most parts of the sea,there are plenty of fishes and plants.Some live near the top of the sca.Othurslive deep down.There are millions of tiny living things that float in the sea.These floating things are so smallthat 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 bewarm.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 clothesmade 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!The land takes up 25%of the world.A:RightB:WrongC:Not mentioned
My father often works( )into the night，which moves me( ). A.deeply，deely B.deep，deep C.deeply，deep D.deep，deeply
Currently， different types of multimodal transport operations involving different combinations are taking place.（）transport does not refer to multimodal transport.A、Sea/airB、Sea/roadC、Sea/railD、Sea/sea
How long the haul for international deep-sea movement usually? （）A、Very longB、Ten thousands of milesC、Thousands of milesD、Thousands of kilometers
单选题A sea anchor is（）.Aa heavy anchor with an extra long line used to anchor in deep waterBa cone shaped bag used to slow down the wind drift effectCa padeye to which the sea painter is made fastDmade of wood if it is of an approved type
问答题Practice 2 Until recently, scientists knew little about life in the deep sea, nor had they reason to believe that it was being threatened. Now, with the benefit of technology that allows for deeper exploration, researchers have uncovered a remarkable array of species inhabiting the ocean floor at depths of more than 660 feet, or about 200 meters. At the same time, however, technology has also enabled fishermen to reach far deeper than ever before, into areas where bottom trawls can destroy in minutes what has taken nature hundreds and in some cases thousands of years to build. Many of the world's coral species, for example, are found at depths of more than 200 meters. It is also estimated that roughly half of the world's highest seamounts - areas that rise from the ocean floor and are particularly rich in marine life - are also found in the deep ocean. These deep sea ecosystems provide shelter, spawning and breeding areas for fish and other creatures, as well as protection from strong currents and predators. Moreover, they are believed to harbor some of the most extensive reservoirs of life on earth, with estimates ranging from 500,000 to 100 million species inhabiting these largely unexplored and highly fragile ecosystems.
单选题水手在船首进行了望。（）ASailors keep uplook at sea.BSailors keep outlook at sea.CSailors keep lookout at sea.DSailors keep lookup at sea.
单选题The fresh water generator produces fresh water （）.Aby cooling sea waterBby heating sea waterCby evaporation of sea waterDby purifying sea water
单选题What is the best title for the passage?AA Moratorium on Bottom Trawling Is Urgently Needed.BThe Oncoming Exploration to the Deep Sea.CThe Disaster of Deep Sea Life.DRainbow Warrior Sets Out to Save Deep Sea Life.
单选题A sea anchor is（）.Aa heavy anchor with an extra long line used to anchor in deep waterBa cone shaped bag used to slow down the wind drift effectCa pad eye to which the sea painter is made fastDmade of wood if it is of an approved type
单选题The underwater listening system was originally designed ______.Ato trace and locate enemy vesselsBto monitor deep-sea volcanic eruptionsCto study the movement of ocean currentsDto replace the global radio communications network
单选题What must be carried out in order to launch and inflate an inflatable liferaft? （）APull on the hydrostatic release，pull on the sea painterBPush on the hydrostatic release，pull on the sea painterCPush on the hydrostatic release，push on the sea painterDPull on the hydrostatic release，push on the sea painter
单选题The deep-sea listening system makes use of ______.Athe sophisticated technology of focusing sounds under waterBthe capability of sound to travel at high speedCthe unique property of layers of ocean water in transmitting soundDlow-frequency sounds traveling across different layers of water
单选题Huff raised the house 2.7 meters off the ground on timber pilings in order to _____.Awithstand beak winds of about 200 km/hrBanchor stronger pilings deep in the sandCbreak huge sea waves into smaller onesDprevent water from rushing into the house.