4.A.Control of Respiration
B.Basic Tips for Preserving Cut Flowers
C.Role of Respiration
D.Most Important Aspect of Flower Care
E.Need for Clean Water
F.Ways of Stopping Respiration
(61)B
While everybody enjoys fresh cut flowers around his house,few people know how to keep them for as long as possible.This may be done by keeping in mind a few simple facts.The key to keeping fresh cut flowers for a week or more without floral preservatives (which contain biocides that kill bacteria and fungus) is to keep the water fresh and the stems free of air pockets so they can continue to draw up water.
(62)D
An important thing to remember about cut flowers is that they are sensitive to temperature.For example,studies have shown that cut carnations (康乃馨) retain their freshness eight times longer when kept at 12℃than when kept at 26℃.Keeping freshly harvested flowers at the right temperatures is probably the most important aspect of flower care.
(63)C
Flowers are not intended by nature to live very long.Their biological purpose is simply to attract birds or insects,such as bees,for pollination (授粉).After that,they quickly dry up and die.The process by which flowers consume oxygen and produce carbon dioxide,called respiration (呼吸),generates the energy the flower needs to give the flower its shape and color.The making of seeds also depends on this energy.While all living things respire,flowers have a high level of respiration.A result of all this respiration is heat,and for flowers the level of heat relative to the mass of the flower is very high.Respiration also brings about the eventual death of the flower.Thus the greater the level of respiration,the sooner the flower dies.
(64)A
How,then,to control the rate at which flowers die?By controlling respiration.How is respiration controlled?By controlling temperature.We know that respiration produces heat,but the reverse is also true.Thus by maintaining low temperatures,respiration is reduced and the cut flower will age more slowly.
(65)E
Another vital factor in keeping cut flowers is the quality of the water in which they are placed.Flowers find it difficult to"drink"water that is dirty or otherwise polluted.Even when water looks and smells clean,it almost certainly contains harmful substances that can endanger the flowers.To rid the water of these unwanted substances,household chlorine bleach (含氯漂白劑) can be used in small quantities.It is recommended that 15drops of chlorine bleach (at 4% solution) be added to each liter of water.The water and solution should also be replaced each day.

分析 本文是一篇科教類閱讀,主要講的是如何保存切花.

解答 61-65 BDCAE
61題答案:B 縱觀全文,可知講的是如何保存切花的一些小訣竅;故本題答案為B選項(xiàng).
62題答案:D根據(jù)最后面的…is probably the most important aspect of flower care.(…可能是鮮花護(hù)理最重要的方面),可知本題答案為D選項(xiàng).
63題答案:C根據(jù)最后一句的Thus the greater the level of respiration,the sooner the flower dies.因此呼吸的等級(jí)越高,鮮花死的越快.可知本段講的是"呼吸的作用(影響)",故本題答案為C選項(xiàng).
64題答案:A根據(jù)本段中的By controlling respiration.How is respiration controlled?通過(guò)控制呼吸.呼吸如何控制呢?可知本題答案為A選項(xiàng).
65題答案:E根據(jù)本段中的Another vital factor in keeping cut flowers is the quality of the water in which they are placed.Flowers find it difficult to"drink"water that is dirty or otherwise polluted.保存切花的另一個(gè)重要因素是水的質(zhì)量.鮮花覺(jué)得"喝"臟水或被污染的水是很困難的.可知本段講的是"切花對(duì)凈水的需求",故本題答案為E選項(xiàng).

點(diǎn)評(píng) 本文是一篇科教類閱讀,題目涉及多道細(xì)節(jié)理解題,做題時(shí)結(jié)合原文和題目有針對(duì) 性找出相關(guān)語(yǔ)句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案.推理判斷也是要在抓住關(guān)鍵句子的基礎(chǔ)上合理的分析才能得出正確的答案.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

14.I would have come on time,but I gotcaught(catch) in the traffic jam.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

15.The more time scientists spend designing computers,the more they wonder at human brain.Tasks that puzzle the most advanced supercomputer-recognizing a face,reading a handwritten note-are just child's play for the 3-pound organ(器官).Most important,unlike any ordinary computer,the brain can learn from its mistakes.Researchers have tried for years to program computers to imitate the brain's abilities,but without success.
Now a growing number of designers believe they have the answer:if a computer is to work more like a person and less like an over-grown calculator,it must be built more like a brain,which distributes information across a vast interconnected web of nerve cells or neurons.
Ordinary computers work by following a chainlike sequence of detailed instructions.Although very fast,their processors can perform only one task at a time.This approach works best in solving problems that can be broken down into simpler logical pieces.The processors in a neural-network computer,by contrast,form a network much like the nerve cells in the brain.Since these artificial neurons are interconnected,they can share information and perform tasks at the same time.This two-dimensional approach works best at recognizing patterns.
Instead of programming a neural-network computer to make decisions,its maker trains it to recognize patterns in any solution to a problem by repeatedly feeding examples to the machine.Neural networks come in all shapes and sizes.Until now most existed as software simulatio ns (模擬品) because redesigning computer chips took a lot of time and money.By experimenting with different approaches through software rather than hardware,scientists have been able to avoid costly (昂貴的) mistakes.
56.It can be inferred from the first two paragraphs that the most advanced supercomputerD.
A.can recognize a face and read a handwritten note
B.can learn from its mistakes
C.weighs only 3 pounds
D.can't distribute information across an interconnected web of nerve cells
57.An ordinary computer can usually do the following except thatD.
A.it must be programmed before it works
B.it can only solve one problem at a time
C.it is good at solving problems that can be broken down into simpler logical pieces
D.it is trained to make decisions
58.The main feature of a neural-network computer is thatA.
A.its processors act as an interconnected web of neurons
B.it is programmed to make decisions
C.its networks are of all shapes and sizes
D.its neurons are artificial
59.What does"this two-dimensional approach"in the third paragraph refer to?C
A.the conventional computer and the neural computer.
B.making decisions and recognizing patterns.
C.sharing information and performing tasks.
D.the computer and the human brain.
60.Scientists use software rather than hardware in their experiments becauseB.   
A.it can avoid redesigning computer chips      
B.it can save a lot of time and money   
C.it can avoid making mistakes             
D.it is more like the human brain.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

12.Whether we're 2 years old or 62,our reasons for lying are mostly the same:to get out of trouble,for personal gain and to make ourselves look better in the eyes of others.But a growing body of research is raising questions about how a child's lie is different from an adult's lie,and how the way we deceive changes as we grow.
"Parents and teachers who catch their children lying should not be alarmed.Their children are not going to turn out to be abnormal liars,"says Dr.Lee,a professor at the University of Toronto and director of the Institute of Child Study.He has spent the last 15 years studying how lying changes as kids get older,why some people lie more than others as well as which factors can reduce lying.The fact that children tell lies is a sign that they have reached a new developmental stage.Dr.Lee conducted a series of studies in which they bring children into a lab with hidden cameras.Children and young adults aged 2 to 17 are likely to lie while being told not to look at a toy,which is put behind the child's back.Whether or not the child takes a secret look is caught on tape.
For young kids,the desire to cheat is big and 90% take a secret look in these experiments.When the test-giver returns to the room,the child is asked if he or she looked secretly.At age 2,about a quarter of children will lie and say they didn't.By 3,half of kids will lie,and by 4,that figure is 90%,studies show.
Researchers have found that it's kids with better understanding abilities who lie more.That's because to lie you also have to keep the truth in mind,which includes many brain processes,such as combining several sources of information and faking that information.The ability to lie-and lie successfully-is thought to be related to development of brain regions that allow so called"executive functioning",or higher order thinking and reasoning abilities.Kids who perform better on tests that involve executive functioning also lie more.
62.What's the purpose of children telling lies?B
A.To help their friends out.
B.To get rid of trouble.
C.To get attention from others.
D.To create a popular image.
63.The underlined word"deceive"in Paragraph 1 can be replaced by"B".
A.handle troubles                                       
B.tell lies  
C.raise questions                                   
D.do research
64.From the second paragraph we can know thatC.
A.which factors can reduce lying
B.why some lie more than others
C.it is normal for kids to tell lies
D.how lying changes as kids grow
65.What is NOT included in the passage?A
A.What to do with lying children.
B.Which kind of kids tells more lies.
C.Experiments about lying of young kids.
D.The reasons why kids tell lies.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

19.Computers are very important to modern life.Many people think that in the future computers will be used in lots of everyday life.It is thought that we won't have to go shopping because we will be able to get most things which are sold in shops on the Internet.There will be no more books because we will be able to get all texts from computers.The Internet will be used to play games,see films and buy food.Most telephone calls will be made by computers,too.
Some people are glad about those new ways of shopping and communication(交流).Others do not think that computers will replace (代替) our old ways.
Some people think that one day we will not read books made of paper.Instead,we will buy and read books using computers,which will keep many different books in them at the same time.

We won't need to turn lots of pages and paper will be saved.Computerized (計(jì)算機(jī)化的) books will be used more and more.
While many people say it is a pleasure to go into shops and look at things you want to buy.It is also unlikely that many people will want to read large texts on our computers,because paper books will perhaps be more friendly.Maybe computers won't change these two habits.

40.Which is the main idea of this passage?C
A.People like going shopping.
B.Reading books is important.
C.Computers are important.
D.Computer can be used to play games.
41.There will be no more books becauseD.
A.There is no paper in the future.
B.People don't like reading books.
C.They are very expensive.    
D.We can read passages from computers.
42.Which of the following is TRUE?A
A.We can see films by computers.
B.People all like to go shopping by computers.
C.We can't buy anything using computers.
D.All the people like reading books from computers.
43.Which of thefollowing is mentioned(提到) in the passage?C
A.Computers can help us e-mail our friends.
B.We can chat by using computers.
C.Computers can help us make telephone calls.
D.We can listen to the music by computers.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

9.In order to know a foreign language well,four things are necessary.First,we must understand the language when we hear it spoken.Secondly,we must be able to speak it ourselves,with confidence and without hesitation(猶豫).Thirdly,we must do much reading.Finally,we must be able to write it.We must be able to make sentences that are correct in grammar.
There are no shortcuts to success in language learning.A good memory is a great help,but it is not enough only to memorize the rules from a grammar book.It is not much learning by heart long lists(一覽表)of words and their  meanings,studying the dictionary and so on.We must learn by using the language.
If we are pleased with a few rules we have memorized,we are not really learning the language.We must"learn through use."Practice is important.We must practise speaking and writing the language whenever we can.

46.The most important things to learn a foreign language areA
A.understanding and speaking      
B.listening,speaking,reading and writing
C.writing and understanding       
D.memorizing and listening
47.Someone hears and writes English very well,but he speaks it very badly.This is becauseD.
A.he doesn't understand the language when he hears it spoken
B.he doesn't have a good memory
C.he always remembers lists of words and their meanings
D.he often hesitates(猶豫)to practise speaking it
48.One can never learn a foreign language well byB.
A.doing much practice     
B.studying the dictionary
C.learning through use     
D.using the language
49.Which is the most important in learning a foreign language?C
A.A good memory.  
B.Speaking.      
C.Practice.    
D.Writing.
50."Learn through use"meansC.
A.we use a language in order to learn it     
B.we learn a foreign language in order to use it    
C.we can learn a language well while we are keeping using it
D.we must learn everything by learning a language.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

16.Memory,they say,is a matter of practice and exercise.If you have the wish and really made a conscious(自覺(jué)的) effort,then you can quite easily improve your ability to remember things.But even if you are successful,there are times when your memory seems to play tricks on you.
Sometimes you remember things that really did not happen.One morning last week,for example,I got up and found that I had left the front door unlocked all night,yet I clearly remember locking it carefully the night before.
Memory"trick"work the other way as well.Once in a while you remember not doing something,and then find out what you did.One day last month,for example,I was sitting in a barber shop waiting for my turn to get a haircut,and suddenly I realized that I had got a haircut two days before at the barber shop across the street from my office.
We always seem to find something funny and amusing in incidents caused by people's forgetfulness or absent-mindedness.Stories about absent-minded professors have been told for years,and we never get sick of hearing new ones.Unfortunately,however,absent-mindedness is not always funny.There are times when"trick"of our memory can cause us great trouble.
8.If you want to have a good memory,B.
A.you should force yourself to remember things
B.you should make a conscious effort of practice and exercise
C.you should never stop learning
D.you should try hard to remember tings
9.Which of the following statements is true according to the passage?A
A.One night the writer forgot to lock the front door.
B.One night the writer forgot having locked the front door
C.The writer remembered to lock the door
D.the writer remembered unlocking the front door
10.In the passage,the writer seems to tell youC.
A.forgetting things is serious and dangerous
B.a(chǎn)lways forgetting things is understandable
C.forgetting things at times is natural
D.the way to protect yourself from memory"tricks"
11.The best title for this passage isB.
A.How to play tricks on Memory
B."Tricks"Of Memory
C.Forgetfulness or Absent-mindedness is Dangerous
D.Get Rid of Absent-mindedness.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

13.You may have experienced the annoyance of being fined because of parking illegally or finding your car towed away(拖走)after leaving it parked somewhere for a couple of minutes.But now a high-tech car sticker that's designed to be stuck to a car's windscreen could help motorists avoid such a situation.
The TowStop sticker sends a text message to a driver when touched by a traffic policeman,to allow motorists to send a reply and give them time to move their cars immediately.Frankfurt-based IT consultant,Daniel Kalliontzis,came up with the idea and is raising money to put his£43sticker into production.
Car owners can put the sticker inside their car's windscreen,having set it up with key information,such as their phone number.The slim design will include a sensor(傳感器)that,when touched by a traffic policeman,will send a text message warning a driver of a possible fine.The driver could then type a reply for the policeman using a smartphone,which will appear on the sticker's screen.
The smart sticker system will rely on the good will of traffic policemen and in a way,a German law.The law states:an officer has to choose the most efficient and inexpensive way for the car owner to remove the vehicle.It could be cheaper for the government to call the driver than to tow his car.
Mail Online asked the Department of Transport whether the sticker could be used in the UK in a similar way.A spokesman said,"In England there is no legal duty to warn the motorist before issuing the ticket.However,a policeman does have the discretion not to issue a ticket if he doesn't think the situation is that bad or he just wants to issue a warning."
So far,Mr.Kalliontzis has raised just over£2,362of his£39,381goal.If he manages to raise the money,the stickers will be shipped in June 2015.But it appears that car owners using the smart system could get some unnecessary warning messages,because anyone could touch the smart sticker.
28.The author wrote the third paragraph toA.
A.explain how a smart car sticker works
B.a(chǎn)dvise drivers to buy a car sticker
C.show the importance of a sensor
D.tell drivers how to park a car
29.We may infer from the text that in BritainB.
A.car owners don't have to worry about a parking ticket
B.smart car stickers wouldn't work as well as in Germany
C.traffic policemen prefer to call a driver rather than tow his car
D.the Department of Transport thinks highly of smart car stickers
30.The underlined word"discretion"in Paragraph 5can best be replaced by"C".
A.trouble     
B.pressure       
C.freedom 
D.opportunity
31.What would be the best title for the text?D
A.Daniel Kalliontzis-a great inventor         
B.Environment-friendly car stickers
C.Parking systems in Europe                      
D.End of the parking ticket?

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

14.This leaflet(傳單)explains in general terms the Driving Offence Points System.
What is the Driving Offence Points System?
After the introduction of this system,certain traffic offences will earn the driver points besides other punishment.If a driver makes any of these offences,the points will be recorded.When the driver gets a certain number of points,he will be forbidden to drive for a certain amount of time.
What are the purposes of this system?
This is a system designed to make roads safer.It can improve standards of driving and reduce the accident rates.
   
What will happen if you have got up to 10points?
If you have got 10points or above,but still less than 15points,you will receive a warning letter from the Transport Department.This letter will tell you your record of Driving Offence Points and remind you of the result of getting more points-It is hoped that this warning will change your driving behavior for the better.
What will happen if you have got 15points?
If you have got 15points or more within two years,a court will take away your driving license.The first time you are found guilty you will not be able to drive for 3months,but if you are caught a second time,you will not be able to drive for 6months.

55."Offence"in this Leaflet meansB.
A.a(chǎn) bad driving habit
B.a(chǎn)n action against the traffic law
C.a(chǎn)n official of road safety
D.bad behavior in the office
56.How many points will you earn if you drive through a red light?A
A.3points.
B.5points.
C.8points.
D.10points.
57.What will happen to you if you have got 13points?D
A.You will be punished for the points.
B.Your driving license will be taken away.
C.Your record will be sent to the Transport Department.
D.You will get a warning letter from the Transport Department.

查看答案和解析>>

同步練習(xí)冊(cè)答案