Death is natural, but do you have any idea of the process of dying? Modern scientists divide the process of dying into two phases --- clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived(复活). Biological death occurs when changes in the organism lead to the “breaking up” of vital cells and tissues. Death is then unchangeable and final.
Scientists have been seeking a way to prolong the period of clinical death so that the organism can remain alive before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic sleep. By slowing down the body’s metabolism(新陈代谢), cooling delays the processes leading to biological death.
To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientist put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from an artery. The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped: clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into an artery in the direction of the heart and started artificial breathing. After two minutes Keta’s heart became active once more. After fifteen minutes, spontaneous(自发的)breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe and ran with it around the room. Her behavior differed little from that of a healthy animal.
1.For a person who suffers from the clinical death
A. his most important organs are damaged.
B. he still has the possibility of getting back to life.
C. he can not avoid final death.
D. he is still very much alive
2.Scientists try to make the time of clinical death longer in order to
A. slow down the body’s metabolism.
B. bring vital cells and tissues back to active life.
C. cool the organism.
D. delay the coming of biological death.
3. How did the scientists put Keta into clinical death?
A. By putting her to sleep, lowering her temperature and draining her blood.
B. By surrounding her body with ice-bags and draining her blood.
C. By lowing her blood pressure and stopping her heart from beating.
D. By draining her blood, lowering her blood pressure and stopping her breathing.
4. All of the following indicate that the monkey has almost restored to her original physical state except the fact that
A. her heart beat again.
B. she regained her normal breath.
C. she rejected a penicillin injection.
D. she acted as lively as a healthy monkey.
科目:高中英语 来源:2014-2015学年重庆市高三10月月考英语试卷(解析版) 题型:单项填空
At this time tomorrow over the Atlantic.
A.we’re going to fly
B.we’ll be flying.
C.we’ll fly
D.we’re to fly
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科目:高中英语 来源:2014-2015学年湖北枣阳第一中学高三10月月考英语试卷(解析版) 题型:单项填空
Michelle found a job as a high school teacher which____ spending quite a lot of time with students.
A. enjoys B. involves C. practices D. suggests
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科目:高中英语 来源:2015-2016学年广东惠阳高级中学高二上学期期中考试英语试卷(解析版) 题型:阅读理解
You have never seen him, but they're with you every time you fly. They record where you are going, how fast you're traveling and whether everything on your airplane is functioning normally. Their ability to withstand (经受得住)almost any disaster makes them seem like something out of a magic book. They're known as the black box.
When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device's homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device(装置) was completely redesigned and moved to the back of the plane – the area least affected by impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft's final moments. Placed in an insulated ( 隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can withstand massive force and temperatures up to 2,000℉. When in deep water, they're also able to emit signals from depths of 20,000 ft. Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1,2009, are in water nearly that deep, but statistics say they're still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane's black boxes were never recovered.
1.In Paragraph 1,the author wants to say the black box_________.
A. comes from a comic book
B. is an necessary device on an airplane
C. can prevent disasters
D. can control the function of an airplane
2.From the black box on the Yemeni airliner_________could be found.
A. the scene of the crash and the degree of the damage
B. the total number of passengers on board
C. homing signals sent by the pilot before the crash
D. data for analyzing the cause of the crash
3.Why was the black box redesigned in 1965?
A. The early models often got damaged in the crash.
B. New materials became available by that time.
C. Too much space was needed for its device.
D. The early models didn't provide the needed data.
4.What do we know about the black boxes from Air France Flight 447?
A. They have stopped sending homing signals.
B. There is an urgent need for them to be reconstructed.
C. There is still a good chance of their being recovered.
D. They were destroyed somewhere near Brazil.
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科目:高中英语 来源:2016届江西赣州市十三县高三上期中联考英语试卷(解析版) 题型:阅读理解
Thanks to a young waiter, I recently found a friend of 20 years was once a yo-yo virtuoso(大师).
“Oh, stop it!” Jackie said when I started laughing during our dinner. “I was, too. And I knew how to ‘Walk the Dog.’”
“Wow, really?” said our waiter, Jumario Simmons, flashing a big smile at us.
“Don’t encourage her,” I said.
“What else could you do?” he asked.
“I did ‘Round the World,’” Jackie said, now ignoring me completely. “That was cradle(婴儿时期的)thing, too.”
I’d asked Jumario what he did when he wasn’t waiting on tables. The 24-year-old waiter was so smart that I knew there had to be more to his story. It turns out that he won a regional yo-yo competition last year. He also gives free lessons to kids. “It gives them something to do,” Jumario said. “Keeps them off the streets.”
One of the great things about eating out is the table talk with strangers, which reminds us that everyone has a life and a name. But the other day I heard that some restaurants are ending this talk between diners and servers. I listened to the reporter describe how their improvements are allowing customers to text orders from their tables to speed up service.
The reporter got my attention with this sentence “Five minutes after typing ‘I’m at table 3’, a meal arrives at the table.” But there wasn’t a “please” with this order, which should have been a request. If you’ve ever waited on tables, you know that the last thing you need is yet another way for a customer to be unpleasant.
Most servers are often mediating(调解)between customers’ requests for substitutions and overworked cooks’ accusations of treason(背叛). Except at high-end restaurants, servers also have to walk back and forth like mothers of preschoolers so that we might consider them worthy of a large enough tip to lift their pay to minimum wage.
Texting a server from a table a few feet away is equal to moving our fingers and shouting, “Hey, you!” It was rude in 1957, and it’s rude now. You won’t ever find me texting a waiter or waitress.
1.What do we know from the text?
A. The waiter knows Jackie well.
B. The waiter is good at playing yo-yo.
C. Jackie plays yo-yo in her spare time.
D. The author has a great interest in playing yo-yo.
2.Some restaurants allow diners to text a server from a table to ________.
A. improve their service
B. reduce the cost of service
C. show respect for diners
D. stop talks between diners and servers
3.What’s the last but one paragraph mainly about?
A. The pay of servers.
B. The work of servers.
C. The customers’ request.
D. The work of mothers of preschoolers.
4.From the passage, the author’s attitude towards texting a server from a table is ________.
A. indifferent B. positive
C. curious D. negative
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科目:高中英语 来源:2015-2016学年江西赣州市十三县市高二上期中联考英语试卷(解析版) 题型:完形填空
阅读下面短文,撑握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项
My friend Kenny and his family had just returned from Disney World. “I saw a sight I’ll ________ forget,” he said. “I want you to know about it.”
He and his family were ________ Cinderella’s(灰姑娘)castle. It was packed with kids and parents. Suddenly all the children rushed to one ________ . If it had been a boat, the castle would have tipped over. Cinderella had ________ .
Kenny said she was a beautiful young girl with each hair________, white skin, and a sweet smile. She stood in the garden of ________ , each wanting to touch and to be touched.
For some reason Kenny ________ and looked toward the other side of the castle. There was a boy who might be seven or eight years old. His ________ was hard to determine because of his height. Dwarfed(侏儒)in height, he stood ________ quietly, holding the hand of an older brother.
It was very ________ that he wanted to be with the children. He ________ to be in the middle of the kids reaching for Cinderella. But can’t you feel his ________ of being turned down? Fear of being laughed at again?
But Cinderella ________ the little boy. She immediately began walking in his direction. ________ but firmly inching through the crowd of children, she became ________ . She walked quickly across the floor, bent down and placed a ________ on his face.
“I thought you would ________ the story,” Kenny told me. I did. It________ me of the one you and I had heard of before. The names are ________ , but isn’t the story almost the same? In both cases a gift was given. In both cases love was ________ . In both cases the lovely one performed a gesture beyond words.
1.A.alwaysB.neverC.everD.often
2.A.outsideB.behindC.besideD.inside
3.A.stepB.sideC.wallD.stop
4.A.enteredB.startedC.leftD.disappeared
5.A.in placeB.in lengthC.in peaceD.in advance
6.A.studentsB.kidsC.parentsD.girls
7.A.jumpedB.whisperedC.turnedD.shook
8.A.nameB.appearanceC.mindD.age
9.A.watchingB.thinkingC.listeningD.searching
10.A.strangeB.stupidC.obviousD.humorous
11.A.failedB.longedC.regrettedD.pretended
12.A.pleasureB.fearC.angerD.amusement
13.A.noticedB.protectedC.supportedD.saved
14.A.RudelyB.PolitelyC.RelaxedlyD.Hardly
15.A.tiredB.freeC.busyD.astonished
16.A.giftB.handC.kissD.touch
17.A.catchB.followC.appreciateD.inspire
18.A.warnedB.informedC.cheatedD.reminded
19.A.importantB.differentC.necessaryD.unique
20.A.separatedB.dividedC.sharedD.expanded
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科目:高中英语 来源:2015-2016学年江苏淮安淮海中学高二上期中英语试卷(解析版) 题型:单项填空
A recent study suggests that teenagers who switch off the TV and sit down to family meals are less _______ to suffer eating disorders.
A. likely B. possible C. probable D. sure
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科目:高中英语 来源:2015-2016学年甘肃兰州第一中学高二上期中英语试卷(解析版) 题型:单词拼写
第一节 单词拼写(一空一词 共15小题,每小题1分,满分15分)
1.Being _____ (暴露)to sunlight for too much time will do harm to one’s skin.
2.He received a prize at the graduation________ (典礼) of the university.
3.It’s ________(非法的) to buy cigarettes in Britain if you’re under 16.
4.If it is ________(方便) to you I’ll be with you next Tuesday.
5.The house is situated in very pleasant __________(周围环境)
6.She _____ _(故意) ignored me when I passed her in the street.
7.You were _______(控告) of ignoring your duty. Who charged you with such a crime?
8.The journalist went out with a __________(专业) photographer.
9.I have to remind myself ___________ (不断地)that I am really in AD 3008.
10.Television keeps us___________ (通知) of the latest news, and it also provides us with entertainment .
11. Our monitor and I ,_________(代表) our class, delivered a speech yesterday.
12.He got hurt during the football match and the_________ (伤害)was serious.
13.Their city has been under ____________ (建设 since last year.
14.Tom’s mother died two days ____________(在…之前) to his arrival.
15.She opened the door __ _________(谨慎地) so as not to wake the baby.
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科目:高中英语 来源:2016届浙江瑞安市高三上学期第一次四校联考英语试卷(解析版) 题型:单项填空
The air quality in the city, ______ is shown in the report, has improved over the past two months.
A. that B. it C. as D. what
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