Plants may not have eyes and ears,but they can recognize their siblings (兄弟姐妹),and researchers at the University of Delaware have discovered how.The ID system lies in the roots and the chemical signals they secrete (分泌).
Canadian researchers published that sea rocket,a common seashore plant,can recognize its siblings.Susan Dudley observed that when siblings are grown next to each other in the soil,they “play nice” and don’t send out more roots to compete.However,the moment one of the plants is thrown in with strangers,it begins competing with them by rapidly growing more roots to take up the water and mineral nutrients in the soil.
After reading Dudley’s study,Bais decided to find the method behind the sibling recognition.Working in his laboratory,Bais and his doctoral student Meredith Biedrzycki set up a study with wild populations of Arabidopsis thaliana.In a series of experiments,young seedlings were exposed to liquid media containing the root secretions from siblings,from strangers,or only their own secretions.The length of the longest lateral (側(cè)面的) root was measured.The exposure of plants to the root secretions of strangers induced (引誘) greater lateral root formation than exposure of plants to sibling secretions.Strangers planted next to each other are often shorter,because so much of their energy is directed at root growth.Because siblings aren’t competing against each other,their roots are often much shallower (淺的).
Biedrzycki did the painstaking laboratory research,observing more than 3,000 plants involved in the study every day for seven continuous days and documenting the root patterns.“Arabidopsis roots are nearly translucent (半透明的) when they are young and were also twisted when I removed them from plates,”Biedrzycki notes.“This manuscript (手稿) is very important for my research since the focus of my thesis project is understanding the biochemical ways behind root secretions.”
The research also may have implications for the home gardener.“Often we’ll put plants in the ground next to each other and when they don’t do well,we blame the local garden center where we bought them or we attribute their failure to a germ,”Bais says.“But maybe there’s more to it than that.”
小題1:Which of the following would be the best title for this passage?
A.A Great Biology Researcher
B.Plants Recognize Their Siblings
C.Plants’ Roots and Secretions
D.A Research on Plants
小題2:What encouraged Bais to study the sibling recognition?
A.Sea rocket.
B.Plants’ sensing system.
C.Biedrzycki’s thesis project.
D.Dudley’s study.
小題3:What does the underlined word “painstaking” in Paragraph 4 probably mean?
A.Important.B.Adventurous.
C.Careful.D.Hard­working.
小題4:What can we infer from the last paragraph?
A.The local garden center should be blamed when plants can’t grow well.
B.The local garden center often sells low quality seeds to customers.
C.Plants in the home garden can’t grow well because of the germ and seeds.
D.Competing against strangers,plants in the home garden can’t grow well.

小題1:B
小題2:D
小題3:D
小題4:D

小題1: B
解析 標題歸納題。文章第一段第一句就開篇點題,植物可能沒有眼睛和耳朵,但他們認識自己的“兄弟姐妹”。下面所有內(nèi)容都是圍繞這一中心展開的。
小題2: D
解析 細節(jié)理解題。根據(jù)第三段第一句可知,在看了Dudley的研究發(fā)現(xiàn)后,Bais決定找出植物識別同胞的方法,故D項正確。
小題3: D
解析 詞義猜測題。文章第四段第一句指出,Biedrzycki連續(xù)花費7天時間來研究、觀察3 000多種植物,由此推知painstaking為hard­working之意。
小題4: D
解析 推理判斷題。在文章最后一段作者提到,當家中花園里的植物生長得不好的時候,人們經(jīng)常會責怪花卉商店或者認為細菌太多。而最后一句作者又暗示,花園里面的植物生長得不好有可能是因為花園里種植了不同種類的植物,它們之間相互競爭,注重根部的生長,從而生長得不好。
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科目:高中英語 來源:不詳 題型:閱讀理解

Human beings are the most intelligent  of all animals because we are gifted with the ability to think and reason logcally.  Scientists and even common people with special intelligence have made a lotol inventions and contributions to modern lifestyle in the past.  "Houses" have been the most popular area for discoveries and inventions in the past and even now.
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小題1:The first paragraph tells us the importance of
A.the particular changes in houses
B.the advantages of modern lifestyle
C.the difference between human beings and animals
D. human being role in making inventions
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A.To improve the present living conditions.
B.To earn more money and gain awards.
C.To be recorded by some special companies.
D.To meet the new demands of new science.
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B.keep your shoulder safe and sound when you are in an accident or an operation
C.help you practice your shoulder more often and reduce shoulder pains
D.cover your shoulder and make it stronger to resist the outside strike
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A.some inventions are easy to be made and can be mastered by common people
B.common people have a strong desire to do something for science research
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D.success is often connected with hardship and bitter experience of common people
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B.household inventions and their influence
C.different ideas about household inventions
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科目:高中英語 來源:不詳 題型:閱讀理解

In Asia,there are special competitions where kites have complex designs and are fitted with instruments that make musical sounds as the wind blows through them.Although all kites have a similar structure(結(jié)構(gòu)),they are widely different in size and shape.Kite­fighting competitions are also held,in which competitors use their kites to attack and bring down their opponents’(對手) kites or cut their strings(線).
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(2012·安徽,D)
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D.Daphne designs kites for the Big Wind Kite Factory.
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A.It has two strings.
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C.A complex structure.
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B.Kite­flying lessons.
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科目:高中英語 來源:不詳 題型:完形填空

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A.confirmedB.examined
C.cancelledD.suggested
小題2:
A.uselessB.dangerous
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小題3:
A.testB.risk
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A.reached B.searched
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小題5:
A.untilB.unless
C.a(chǎn)sD.if
小題6:
A.overB.within
C.throughD.a(chǎn)cross
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A.whatB.how
C.whyD.which
小題8:
A.wordB.hold
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小題9:
A.thoughtsB.feelings
C.solutionsD.excuses
小題10:
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小題11:.
A.changedB.lifted
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A.strangeB.a(chǎn)ngry
C.kindD.sad
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A.somewhereB.a(chǎn)nywhere
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A.fireB.laugh
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A.courseB.lesson
C.knowledgeD.a(chǎn)bility
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A.eyeB.head
C.handD.feet
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A.embarrassedB.excited
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A.gradeB.honesty
C.interestD.safety
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“The key to our success was having the ____ to take on any job and then being ____ in our approach to getting it done.”
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A.kindnessB.patience
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小題2:
A.constructionB.repair
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小題3:
A.a(chǎn)fterB.a(chǎn)s
C.forD.so
小題4:
A.whileB.since
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小題5:
A.SomeB.Any
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A.shortB.vacant
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A.a(chǎn)bleB.nervous
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A.supportedB.promised
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A.a(chǎn)skedB.surprised
C.remindedD.demanded
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A.thoughB.but
C.a(chǎn)sD.unless
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A.discussionB.a(chǎn)ction
C.practiceD.production
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A.nextB.first
C.pastD.previous
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A.coldB.wet
C.looseD.clean
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A.swearB.delay
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A.excuseB.order
C.permitD.reason
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A.exactlyB.personally
C.a(chǎn)ngrilyD.hardly
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A.pullB.knock
C.hitD.water
小題18:.
A.requiredB.mixed
C.followedD.formed
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A.courageB.interest
C.hopeD.chance
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小題1:
A.muchB.nothing
C.somethingD.none
小題2:
A.keepsB.puts
C.takesD.depends
小題3:
A.fullB.fond
C.proudD.out
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A.permittedB.worried
C.satisfiedD.a(chǎn)nxious
小題5:
A.takingB.bringing
C.goingD.thinking
小題6:
A.ifB.when
C.whyD.whether
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A.sillyB.necessary
C.possibleD.funny
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A.wrongB.bad
C.importantD.right
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A.workB.housework
C.dutyD.business
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A.nothingB.a(chǎn)ll
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A.instructiveB.useless
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A.expectB.like
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A.neverB.certainly
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A.famousB.careful
C.curiousD.hard
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A.forB.without
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科目:高中英語 來源:不詳 題型:閱讀理解

Shakespeare once called the English countryside “the precious stone set in the silver sea”- and he is not the last to sing high praises of its beauty and historical charm(魅力).
The countryside is particularly beautiful during the summer, especially in August and September. As one travels the countryside, you’ll find more of its treasures: so many plants and animals, romantic castles(浪漫的城堡), secret gardens, and villages so unchanged in the last decades that they seem to have been caught under a fairy’ s spell.
Must-sees include Derbyshire, called “the heart of England” and home to the National Park. The great peaks were the muse(創(chuàng)作靈感)of the Bronte sisters (and if you love the book Jane Eyre, you can visit North Lees hall, where the real Eyre family once lived).
History lovers will enjoy a visit to Lincoln city (its most famous son is Lord Alfred Tennyson). It is also known for its cathedral(大教堂), the charming tea shops, a small castle. One would never guess its violent past—built by Romans, it was once a center for arrow(箭) making.
Harry Potter fans shouldn’t miss a visit to Alnwick, which is better recognized as the “Hogswarth” in the movies.
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Art lovers will also like a visit to East Anglia, whose landscapes inspired the painter Constable (he was born in Dedham village). This is also home of the University City of Cambridge, and the famous architectural(建筑上的) attraction, King’s College Chapel. Be sure to visit the aircraft museum of Duxford.
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A.Uninterested.B.Dissatisfied(不滿意的).
C.Surprised.D.Admiring.
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A.produced arrows in the past
B.will be enjoyed by music lovers
C.was the place where the Eyre family once lived
D.has one of the world’ s most famous universities
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A.the Wessex region B.Derbyshire C.YorkshireD.Alnwick
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A.a(chǎn) travel guide
B.a(chǎn) book review(書評)
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科目:高中英語 來源:不詳 題型:閱讀理解

A few common misconceptions. Beauty is only skin-deep. One' s physical assets and liabilities don' t count all that much in a managerial career. A woman should always try to look her best.
Over the last 30 years, social scientists have conducted more than 1,000 studies of how we react to beautiful and not- so-beautiful people. The virtually unanimous conclusion: Looks do matter, more than most of us realize. The data suggest, for example, the physically attractive individuals are more likely to be treated well by their parents, sought out as friends, and pursued romantically. With the possible exception of women seeking managerial jobs they are also more likely to be hired, paid well, and promoted.
Un-American, you say, unfair and extremely unbelievable? Once again, the scientists have caught us mouthing pieties (虔誠) while acting just the contrary. Their typical experiment works something like this. They give each member of a group--college students, perhaps, or teachers or corporate personnel managers a piece of paper relating an individual' s accomplishments. Attached to the paper is a photograph. While the papers all say exactly the same thing the pictures are different. Some show a strikingly attractive person, some an average-looking character, and some an unusually unattractive human being. Group members are asked to rate the individual on certain attributes, anything from personal warmth to the likelihood that he or she will be promoted.
Almost invariably, the better looking the person in the picture, the higher the person is rated. In the phrase, borrowed from Sappho, that the social scientists use to sum up the common perception, what is beautiful is good.
In business, however, good looks cut both ways for women, and deeper than for men. A Utah State University professor, who is an authority on the subject, explains: In terms of their careers, the impact of physical attractiveness on males is only modest. But its potential impact on females can be tremendous, making it easier, for example, for the more attractive to get jobs where they are in the public eye. on another note, though, there is enough literature now for us to conclude that attractive women who aspire (追求) to managerial positions do not get on as well as who may be less attractive.
小題1: In "Beauty is only skin-deep", "skin-deep" can be replaced by______.
A.decoratingB.superficialC.expressiveD.demanding
小題2: "One's physical assets and liabilities don' t count all that much in a managerial career."(paral) can be interpretated as______.
A.whether or not one looks good or bad, it doesn' t affect much one' s managerial career
B.in one' s managerial career, he may deal with cases like assets and liabilities
C.in one' s managerial career, he may rarely deal with cases like assets and liabilities
D.whether or not one looks good or bad, it may affect much one' s managerial career
小題3:  The result of research carried out by social scientists show that______.
A.people do not realize the importance of looking one' s best
B.women in pursuit of managerial jobs are not likely to be paid well
C.good -looking women aspire to managerial positions
D.a(chǎn)ttractive people generally have an advantage over those who are not
小題4: "Good looks cut both ways for women" (Para.5) means that______.
A.a(chǎn)ttractive women have tremendous potential impact on public job
B.good-looking women always get the best of everything
C.being attractive is not always an advantage for women
D.a(chǎn)ttractive women do not do as well as unattractive women in managerial positions
小題5:  It can be inferred from the passage that in the business world______.
A.handsome men are not affected as much by their looks as attractive women are
B.physically attractive women who are in the public eye usually do quite well
C.physically attractive men and women who are in the public eye usually get along quite well
D.good looks are important for women as they are for men

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科目:高中英語 來源:不詳 題型:閱讀理解

Are you feeling stressed out? Anxious? Is your mind racing in circles? Are you worried about all the things you have to get done? Here’s a quick—acting trick that can make you feel better.
If you are sitting at a desk, place the palm of your hand on the desk, and take a moment to focus on what the surface of the desk feels like. Is it hot or cold, rough or smooth? Put all of your attention on the sensations in your palm, on how the desk feels underneath your hand. If you are not at a desk, do the same exercise by placing your palm on any nearby object—a wall, a chair, even your opposite arm.
When you are feeling stressed, your thoughts tend to take on a life of their own. You may be thinking about things you wish you had done differently in the past or worrying about things that you have to do in the future. These thoughts will make you feel anxious. The anxiety, in turn, increases the number of anxious thoughts.
If you can ground yourself even for a moment in the present, you will break the cycle and feel instant relief. Paying attention to what objects in your environment feel like forces you to pay more attention to the present moment than to negative, anxiety—provoking (刺激的,誘發(fā)的)thoughts about the past or about the future.
Try using your other senses too:
Try closing your eyes for a second(don’t try this while driving!) and breathe deeply through your nose. What do you smell?
When eating, put all your attention on how your food tastes.
What do you hear? What little noises are there around you that you didn’t notice before?
Look closely at an ordinary object. Do you see anything you haven’t noticed before?
小題1:By saying  “Is your mind racing in circles”, the author intends to mean that______.
A.you did something wrong in the past and wouldn’t forgive yourself
B.your mind is quick and bright when in a state of anxiety
C.you are thinking in a stupid way when anxious thoughts worries you a lot
D.you worried a lot and the anxious thoughts will increase your anxiety
小題2:The author advises to put your palm on the desk or any things nearby in order to ____
A.play a small trickB.feel the surface of the object
C.do some exercisesD.reduce your anxiety
小題3:The writer mentioned some senses that could be used to reduce stress except the _____.
A.sense of touchingB.sense of smellC.sense of humourD.sense of listening
小題4:Which of the following can be served as a title for the article?
A.Frist Aid to Anxiety----Senses
B.How Anxiety Works
C.The Cause of Anxiety—Senses
D.How to Deal with Anxiety

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