2020届广州市恒福中学高三英语期中试题及答案.pdf
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1、20202020 届广州市恒福中学高三英语期中试题及答案届广州市恒福中学高三英语期中试题及答案第一部分第一部分阅读(共两节,满分阅读(共两节,满分4 40 0 分)分)第一节(共第一节(共 1515 小题;每小题小题;每小题 2 2 分,满分分,满分 3030 分)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 AUnique LighthousesAugust 7 is National Lighthouse Day.Its a day to celebrate the lights that guideus home and the historicimportan
2、ce of lighthouses and their keepers,who not only guided ships into harbor but also played key roles innaval battles across the globe.Check out these fantastic lighthouses across the globe as well as recommendationson the best places to stay near them.Cape Byron Lighthouse,Byron Bay,AustraliaThe Cape
3、 Byron Lighthouse in Byron Bay,Australia was built in the early 20th century to help protect theAustralian coastline.Today,its a beautiful location to watch the sunrise.Within walking distance is the Watermark,a perfect place to stay and get some much-needed rest and relaxation from daily life.Light
4、house of Chania,Crete,GreeceThe Lighthouse of Chania,Crete is one of the oldest surviving lighthouses in the world,dating back to thesixteenth century.Travelers can take a walk along its long pier(码头)during the sunset.Located near the pier tothe lighthouse is a hotel from 1890,which offers beautiful
5、 views of the bay.Key West Lighthouse,Key West,Florida,USAThe Key West Lighthouse was built in 1825 to help guide ships entering the port.Travelers can enjoy climbingup the lighthouse to reach the wonderful sea views and can stay at the KimptonLighthouse Hotel,with easy access to the lighthouse and
6、the Ernest Hemingway Home and Museum.Pigeon Point Lighthouse,Pescadero,California,USAThe Pigeon Point Lighthouse in Pescadero,California was built in1871 to help ships navigate(导航)theregions dangerous coastline.Today,the lighthouse is a state landmark,and the quarters where the lighthousekeepers liv
7、ed have been turned into a hostel,making it a great home base to explore the outdoors,spot whalesand watch the stars.1.Why is National Lighthouse Day celebrated?A.To show the hard life of lighthouse keepers.B.To instruct how to guide ships into harbor.C.To honor lighthouses and their keepers.D.To st
8、ress the importance of light.2.Of the following lighthouses,which is the oldest?A.Cape Byron Lighthouse.B.Lighthouse of Chania.C.Key West Lighthouse.D.Pigeon Point Lighthouse.3.What do the listed lighthouses have in common?A.They are all located in the USA.B.They have becometourist attractions.C.The
9、y offer accommodation to visitors.D.They are good spots to watch the sunrise.BWith their tiny brains and excellent ability to memorize nectar locations,honeybees are a favorite modelorganism for studying learning and memory.Such research has indicated that to form long-term memoriesonesthat last a d
10、ay or morethe insects need to repeat a training experience at least three times.By contrast,short-and mid-term memories that last seconds to minutes and minutes to hours,respectively,need only a singlelearning experience.Exceptions to this rule have been observed,however.For example,in some studies,
11、bees formed long-lastingmemories after a single learning event.Such results are often regarded as circumstantial anomalies,says MartinGiurfa of the University of Toulouse.But the anomalous findings,together with research showing that fruit fliesand ants can form long-term memories after single exper
12、iences,aroused Giurfas curiosity.Was it possible thathoneybees could reliably do the same?Giurfa reasoned that the ability to form long-term memories mightdepend on the particular type of bee and the experience.Within a honeybee colony,there are nurses,who cleanthe hive and feed the young;guards,who
13、 patrol and protect the hive;and foragers,who search for nectar.While previous studies have tested bees as a whole,Ciurfa and his colleagues focused on foragers,taskingthem with remembering an experience relevant to their role:an odor associated with a sugary reward.The researchers observed that a s
14、ingle exposure to a reward-paired odor was enough for most forager beesto remember that specific odor the following day.Many foragers could even remember the odor three day later.The results do not mean that all prior research was wrong,says Andr Fiala of the University of Gttingen.“People have done
15、 the experiments in a different way.”Still,the new results do show that“the commonly heldbelief that one needs multiple training trials to achieve long-term memory is not always true,”he says,and this“really advances the field.”4.What does the author want to tell us through Paragraph 1?A.A model for
16、 memory research.B.The classification of memories.C.New research on learning and memory.D.Previous findings on memory formation.5.Which factor might influence a bees memory of an experience,according to Giurfas research?A.Whether the bees role is related.B.Whether the bee is introduced or native.C.H
17、ow often the bee repeats the experience.D.How long the bee is exposed to the reward.6.What is Andre Fialas attitude towards the new results?A.Doubtful.B.Favorable.C.Intolerant.D.Unclear.7.Which of the following is a suitable title for the text?A.Learning and Memory:How Honeybees RememberB.Honeybee M
18、emory:Honeybee Knows What to DoC.Honeybees Remember after Just One LessonD.Honeybees Use Memory for CommunicationCResearchers say spicy tomatoes could soon be on the menu thanks to the rise of gene-editing technology.Its not the first time that experts have claimed techniques could develop fruit wit
19、h unusual features:scientists have already been looking at changing the color1 of kiwi fruit and bettering the taste of strawberries.But researchers inBrazilandIrelandsay such methods could also offer practical advantages,with hot tomatoesoffering a new way of harvesting the pungent chemicals found
20、in peppers known as capsaicinoids,which makefood taste“hot”.“Capsaicinoids are valuable.They are used as painkillers and there are some researches showing that theypromote weight loss,”said Agustin Zsogon from a Brazilian university,a co-author of a new article arguing for thebenefits of engineering
21、 hot tomatoes.Writing in the journal Trends in Plant Science,the researchers say peppers are difficult crops to grow and lowproductive.Worse still,it is tricky to keep the pungency of the fruits table.By contrast,tomato production is highand the plant is well-studied.“You could produce the capsaicin
22、oids in a more cost-effective manner,”said Zsogon.Tomatoes and peppers developed from a common ancestor,but separated about 19 million years ago.“Allthese genes to produce capsaicinoids exist in the tomato,they are just not active,”said Zsogon.“Usinggene-editing technology,it is likely to switch the
23、se genes back on in tomatoes,making the fruit more special”,hesaid.8.Why are the tomatoes made hot by the researchers?A.To test the gene-editing technologyB.To improve the amount of the tomatoesC.To explore ways to harvest more capsaicinoids.D.To make the tomatoes more delicious.9.For what purpose c
24、an capsaicinoids be used according to the text?A.To put on weight.B.To ease the pain.C.To improve sleep.D.To better the look.10.What is Zsogons attitude to the gene-editing technology?A.Confident.B.Critical.C.Anxious.D.Doubtful.11.Whats the main idea of the text?A.An introduction to gene-editing pla
25、nts.B.Creating hot tomatoes by gene-editing.C.Problems with capsaicinoid production.D.The procedure of producing capsaicinoids.DYouve heard that plastic is polluting the oceans between 4.8 and 12.7 million tonnes enter oceanecosystems every year.But does one plastic straw or cup really make a differ
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