2020屆高考英語(yǔ)考前拔高每日練第3練

1、2020屆高考英語(yǔ)考前拔高每日練綜合訓(xùn)練（3）1、We went through a period communications were very difficult in the ruralareas.A. whichB. whoseC. in whichD.with which2、Since I have little work experience, I will have to take a series of unpaid internships Icould find my ideal job.A.beforeB.afterC.asD.when3、He asked, "

2、Are you a Party member or a League member?"fHe asked me.A.If I was a Party member or a League memberB.am I a Party member or a League memberC.was I a Party member or a League memberD.whether was I a Party member or a League member4、People have been wondering why elephants do not develop cancer

3、even though they have lifespans（壽命）that are similar to humans, living for around 50 to 70 years.Now scientists believe they know why. A team at the University of Chicago, US has found that elephants carry a large number of genes that stop tumors（腫瘤）developing. To be precise, they found 20 copies of

4、an anti-tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.According to the research, the extra copies of the gene improved the animal' s sensitivityDNA damage, which lets the cells quickly kill themselves when damaged before they can go on to form dea

5、dly tumors“An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals ," the study author Dr. Vincent Lynch told The Guardian. If every living cell has the same chance of becoming cancerous（癌變的）,large creatures with a long lifespan likewhale

6、s and elephants should have a greater risk of developing cancer than humans and mice. But across species, the risk of cancer does not show a connection with body mass.This phenomenon was found by Oxford University scientist Richard Peto in the 1970s andlater named " Peto ' s pOrOdoX( . Biol

7、ogists believe it results from larger animals usingprotection that many smaller animals do not. In the elephant' s case, the making of TP53 isnature ' s way oeping this species alive.The study also found that when the same genes were brought to life in mice, they had thesame cancer resistanc

8、e as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers spreading or even developing in the first place.“Nature has already figured out how to prevent cancer," said Joshua Schiffman, a biologistat the School of Medicine, University of

9、Utah, US." It ' s up to us to learn how different animalsdeal with the proble m so that we can use those strategies to prevent cancer in people.”I.Why are elephants unlikely to develop cancer?A.They have a rather large body size.B.Their genes suffer no DNA damage.C.Certain genes in their bo

10、dy kill existing tumors.D.They carry many genes to prevent tumors developing.2 .According to the passage, what has been a risk in the evolution of large animals?A.Deadly tumors.B.The huge body mass.C.Cells killing themselves.D.Sensitivity to DNA damage.3 .What does the underlined part“ This phenomen

11、on " in Paragraph 5 probably refer to?A.Larger animals have protection from TP53.B.The risk of cancer is not related to body size.C.Larger animals suffer the same risk of cancer as smaller ones.D.The larger animals are, the bigger risk of cancer they will have.4 .What can be concluded from the

12、passage?A.Depending on nature is surely enough to fight against cancer.B.The TP53 genes have proved useful in stopping cancer in people.D.The extra copies of elephantsC.Humans are expected to prevent cancer with the making of TP53.genes are used to cure cancer patients.5、The bad health effects of sl

13、eep loss during the week can' t be repaid by longer weekendsleep, according to a new study. Researchers have long known that sleep deprivation （錄U奪）can cause weight gain and increase other health risks. But for those who force themselves out of bed every weekday after too few hours of shut-eye.

14、They hope turning off the alarm on Saturday and Sunday will repay the weekly sleep debt and remove any ill effects.The research, published in Current Biology , crushes those hopes. Despite complete freedom to sleep during a weekend recovery period,people in a sleep lab who were limited to five hours

15、 of sleep on weekdays gained nearly three pounds over two weeks and experienced disorders that would increase their risk for diabetes over the long term. While weekend recovery sleep had some benefits after a single week of sleep loss,those gains were wiped out when people fell right back into their

16、 same sleep-deprived schedule the next Monday.It s very short lived,“If there are benefits of catchup sleep,they ' re gone when you go back to your daily schedule.said Kenneth Wright, director of the sleep and chronobiology lab at theUniversity of Colorado at boulder.ealth Thesehare long-term. I

17、ts kind of like smokingonce was people would smoke and wouldn ' t see an immediate effect on their health, but people will say now that smoking is not a healthy lifestyle choice. I think sleep is in the early stage of where smoking used to be.Wright said that the study suggests people should put

18、 sleep in the first place - cutting out the“sleep stealers " such as watching television shows or spending time on their phones. Even when people don ' t have a choice about losing sleecauese of child-care responsibilities or job schedules, they should think about getting sleep in the same

19、way they would get a healthy diet or exercise.1.What do the researchers find about weekend recovery sleep?A.It is common among people.B.It will make people healthier.C.It can make people put on weight.D.It s able to make up for the sleep loss.A.Arouses.2.What does the underlined worda crushes "

20、 mean?D. Ruins.B.Guarantees.C.Deepens.3.What will Kenneth Wright agree with?A.It takes long for people to see the effects of sleep loss.B.Smoking and sleep loss have the same bad effects.C.Weekend recovery sleep has many benefits.D.Smoking is more harmful than sleep loss.4.What does Kenneth Wright a

21、dvise people to do?A.Sleep as long as possible during weekdays.B.Watch some TV shows before bedtime.C.Reduce the screen time before sleep.D.Take regular exercise every day.答案以及解析1答案及解析：答案：C解析：考查定語(yǔ)從句：先行詞是a period,定語(yǔ)從句中缺少in the period,用in which 或where引導(dǎo)定語(yǔ)從句，句意:我們經(jīng)歷了一個(gè)階段，期間在農(nóng)村交流很難。選C。2答案及解析：答案：A解析：根據(jù)句子

22、的意思可知，應(yīng)該使用before來(lái)引導(dǎo)一個(gè)時(shí)間狀語(yǔ)從句，表示"在之前",after意為"在之后”;as意為"當(dāng)?shù)臅r(shí)候"when意為"當(dāng)?shù)臅r(shí)候"均不符合句子的意思.故選:A.3答案及解析：答案：A解析：選擇疑問(wèn)句改為間接引語(yǔ)時(shí)，應(yīng)用whether引導(dǎo),并用陳述語(yǔ)序.4答案及解析：答案：1.D; 2.A; 3.B; 4.C解析：1.根據(jù)文章第二段 A team at the University of Chicago, US has found that elephants carrya large number of gene

23、s that stop tumors（腫瘤）developing. To be precise, they found 20 copies of an anti-tumor gene called TP53 in elephants. Most other species, including humans, only carryone copy.可以判斷：大象攜帶了許多抗癌基因來(lái)阻止腫瘤的發(fā)展，所以選擇D。2 .根據(jù)文章第四段第句"An increased risk of developing cancer has stood in the way of theevolution

24、of large body sizes in many animals,聯(lián)系上文中提到的腫瘤 ，可知選 A。3 .因?yàn)閯澗€部分在第五段第一句，而且是承接上文說(shuō)的，所以往文章第四段最后幾句找。從But across species, the risk of cancer does not show a connection with body mass.可以判斷：這種現(xiàn)象 指的是物種患癌癥的幾率和他們的體型沒(méi)有關(guān)系，所以選擇Bo4 .A項(xiàng)太過(guò)絕對(duì)，文中提到的只是自然給予我們戰(zhàn)勝癌癥的一種可能性，并不是說(shuō)一定可以。B項(xiàng)文中沒(méi)有提到，用于做實(shí)驗(yàn)的是老鼠，不是人。選才i C說(shuō)的是未來(lái)的一種可能性，正確

25、。D項(xiàng)文中沒(méi)有提及大象的基因已經(jīng)被用來(lái)治愈癌癥病人，所以錯(cuò)誤。5答案及解析：答案：1.C 2.D 3.A 4.C解析：1.細(xì)節(jié)理解題。根據(jù)第三段第二句話“Despitecomplete freedom to sleep during a weekend recovery period, people in a sleep lab who were limited to five hours of sleep on weekdays gained nearly three pounds over two weeks and e xperienced disorders that would in

26、crease their risk for diabetes over the long term. 可知，平日睡 眠少的人，體重可能會(huì)增加，并增加患糖尿病的風(fēng)險(xiǎn)。2 .詞義猜測(cè)題。本題理解的關(guān)鍵在于搞清楚“thoshopes指代的是第二段中的“thcynope turning off the alarm on Saturday and Sunday will repay the weekly sleep debt and re move any ill effects.”根本句可知人們寄希望于通過(guò)周末補(bǔ)覺能彌補(bǔ)睡眠，然后這個(gè)研究卻打破了 ”人們的這種愿望。推測(cè)此處詞義為摧毀，打破”的意思。故選D項(xiàng)。3 .細(xì)節(jié)理解題。根據(jù)倒數(shù)第二段中的“Theshealth effects are long-term. It ' kind of like smoking once was people would smoke and wouldn ' see an immediate effect on their health, but people will say now that smoking is