2021届临沧市第一中学高三英语上学期期末考试试题及参考答案.pdf
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1、2021 届临沧市第一中学高三英语上学期期末考试试题及参考答案 第一部分 阅读(共两节,满分 40 分)第一节(共 15 小题;每小题 2 分,满分 30 分)阅读下列短文,从每题所给的 A、B、C、D 四个选项中选出最佳选项 A In September,something terrible happened on the west coast ofTasmania,Australia.As many as 380 pilot whales became stranded(搁浅)in shallow water there and later died.This might have bee
2、nAustralias largest stranding event on record,the BBC reported.But this large amount of whale stranding is not uncommon.For centuries,it has happened all over the world and has puzzled scientists.Scientists say the cause is often unknown.But they have offered many different explanations.Some say the
3、 whales chase small fish for food and end up in shallow water because they are not paying attention to where they are going.Others think the stranding has something to do with Earths geomagnetic field(地磁场).They say that a geomagnetic compass in whales brains controls their position.Unusual changes i
4、n Earths magnetic field can affect the whales compasses and send them in the wrong direction.Another explanation suggests that stranding is caused by the close relationships that whales have.Pilot whales travel in large groups.One lead whale might mistakenly lead the whole group to shallow water.“An
5、d if one gets into trouble,the others will not leave,”said Sheryl Gibney,a leading biologist fromNew Zealand.“Some will come in and try to help,they get trapped on the beach,then more will come.”The whales are trapped by mistake or out of sympathy(同情).Once they get stranded,they will likely die.Acco
6、rding to the National Oceanic and Atmospheric Administration of theUS,less than 10 percent of all stranded whales survive.1.What do we know about the stranding inAustralia?A.It happened on theeast coast ofAustralia.B.It caused the death of over 300 pilot whales.C.It is commonly seen in September eac
7、h year.D.It was the largest stranding event in the world.2.According to Gibney,the pilot whales are the animals that_.A.are kind to each other B.are easy to lose direction C.are too huge to float in the sea D.are silly to follow the leading whale 3.What is the story mainly about?A.How human activity
8、 has affected whales.B.What might cause whale strandings.C.How whales find their direction while traveling.D.What scientists are doing to save stranded whales.B For 30 years we have been told how temperatures have been rising rapidly to unheard of levels.This is causing polar ice to melt,sea-levels
9、to rise and has brought about adangerous increase in extreme weather events.These intense climatic changes would likely present challenges to our society and environment.The causes of climate change are mainly anthropogenic(人为的)in nature.Since the industrial revolution,human activities have increase
10、d the amount of greenhouse gases in the atmosphere.The increased amount of gases which absorb heat has led to more heat being kept in the atmosphere,causing global warming.The certainty of global warming can be seen through some of the natural phenomena like the effect on crops and extreme weather c
11、onditions around the world.The most recent assessment report says that the earths average temperature has risen by 0.74 degrees in the period from 1906 to 2005,and that the average temperature will continue to rise.There have also been more violent downpours,sea levels have risen and the ice at the
12、worlds poles and on its mountains is melting.The rising sea level is flooding the low-lying countries inAsiaand small islands in the Pacific.This may lead to the displacement of millions of people,loss of millions of land and consequently billions of dollars.Troubled by the serious situation,world l
13、eaders came together for the 2015 United Nations(UN)Climate Change Conference inParis.The climate talks led to 196 countries reaching a landmark agreement that will,for the first time,commit nearly every country to lowering planet-warming greenhouse gas emissions to address global climate change.Tha
14、t was certainly an encouraging step forward for our earth and mankind!As the world leaders continue to commit themselves to monitor our sick planet,we need to continue to take small steps to heal the world.We are left with not much of a choice.If only we could just pack our bags and migrate to Mars!
15、4.What does paragraph 2 mainly talk about?A.The information of industrial revolution.B.The greenhouse gases in the atmosphere.C.The reasons of climate change.D.The result of extreme weather events.5.What can we infer from the last paragraph?A.We have made great achievements.B.Some measures are still
16、 required to take.C.Mars is suitable for peoples living.D.Some countries will receive urgent aid.6.Which can be a suitable title for the text?A.Long Live Planet Earth!B.Environment Changes Rapidly!C.What Serious Global Warming!D.How Important the UN Agreement Is!7.Which of the following shows the st
17、ructure of the whole text?A.B.C.D.C The worlds largest iceberg is floating toward South Georgia in the southernAtlantic Ocean.Scientists fear the iceberg could crash into the island and block major feeding areas for a large population of penguins and seals.If the iceberg hits the island,it could pre
18、vent the penguins and seals from reaching food supplies.The huge iceberg is named A68a.It broke away fromAntarcticas Larsen C Ice Shelf in 2017.Satellite images show the iceberg has remained in one piece.It is estimated to be about 150 kilometers long and 48 kilometers wide.It is traveling at one ki
19、lometer per hour and is on a path to hitSouth Georgiain around 30 days.This is the time of year when seals and penguins spend a lot of time caring for their young.The distance that parents have to travel to find food is crucial.That means they have to go a lot further or go around the iceberg to fin
20、d sources of food.Ecologists say an iceberg crash would also disturb materials settled on the seabed,possibly polluting the surrounding seas.As the iceberg melts,it would also release large amounts of fresh water into the ocean.This could affect krill(磷虾)populations that are a major source of food f
21、or the islands wildlife.The iceberg could remain for up to 10 years and change the areas whole ecosystem.These are globally significant populations of these species.If these species fail in this particular area,then the numbers globally are going to go down quite dramatically.Professor Geraint Tarli
22、ng,an ecologist at the British Antarctic Survey,said,The breaking off of icebergs fromAntarcticais a natural process.But the process is changing with climate change.What were seeing with models and some observations now is that this is happening at an increasing rate.And so,this might become more of
23、 a usual thing in the future.8.Why are the scientists worried about the coming iceberg crash?A.It will bring extremely cold weather.B.It will destroy the feeding areas of the animals.C.It will put wildlife on the island at risk of starving.D.It will prevent animals from moving to other places.9.What
24、 is paragraph 2 mainly about?A.The characteristic of the iceberg.B.The importance of the iceberg.C.The traveling speed of the iceberg.D.The forming process of the iceberg.10.What damage can an iceberg crash bring according to paragraph 4?A.Using up much fresh water.B.Polluting the surrounding farms.
25、C.Changing the worlds ecosystem.D.Affecting the number of certain species.11.How does Tarling think of the breaking off of icebergs fromAntarctica?A.It may slow down in the near future.B.It may become common in the future.C.It has a great influence on the climate.D.It helps scientists conduct a sea
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