Young trees don't just grow;they develop a personality and learn more about their environment and how they should best behave in it.They also help each other out whenever there's trouble.
Personality,just as among people,varies among trees.Some are anxious,some bold.On the author's land,there are three oak trees growing close together.One of the oak trees always starts to shed its leaves two weeks earlier than the others.Since they all experience the same temperature,the same soil and the same length of day,such variables can't be the explanation.So what's happening?Well,this tree is simply more careful than the others.Whoever holds on to their leaves longer can do more photosynthesis(光合作用) and store more nutrients.However,the longer a tree keeps its leaves,the higher the risk of injury.
Not only do trees make their own decisions,they also learn from their mistakes.A tree,for example,keeping its leaves too long during one year will never make this mistake again.This leads to several other conclusions:trees must notice the temperature and the length of the day and be able to save their experiences somewhere.Obviously,trees don't have brains,but it is thought that in the sensitive tips of their roots they keep track of information and experiences.
But trees aren't only clever when it comes to caring for themselves.They also support each other whenever there's trouble by giving warnings and even taking care of sick and weak conspecifics with nutrients.For example,one time the author found a very old tree stump.Its insides had rotted a long time ago to topsoil.But the wood on the outside of the stump was still living.How was this possible?Well,the stump was nourished by its neighbors with nutrients from the root system,and had been for at least 400 years!
Why do trees do such a thing?It's simple:it's better together.Trees need the forest;it protects them from storms,provides the right microclimate and warns them of attacks.
(1)Why does the author mention the three oak trees?BB
A.To illustrate trees can learn from experiences.
B.To show trees can make independent decisions.
C.To explain trees are quite supportive to each other.
D.To prove trees have the same personalities as humans.
(2)According to the text,which of the following best describes general features of trees?DD
A.Anxious and bold.
B.Smart and adventurous.
C.Helpful and well behaved.
D.Adaptable and supportive.
(3)What does the underlined phrase "do such a thing" mean?BB
A.Give warnings.
B.Offer assistance.
C.Depend on others.
D.Provide nutrients.
(4)Where does this text most probably come from?BB
A.A public lecture.
B.A science book.
C.An experiment report.
D.A travel journal.
【答案】B;D;B;B
【解答】
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發(fā)布:2024/4/20 14:35:0組卷:18引用:2難度:0.5
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1.Most of us spend our lives seeking the natural world.We go fishing,sit in the garden,have a picnic,live in the suburbs or go to the seaside.The most popular leisure activity in Britain is going for a walk.When joggers jog,they don't run on the streets.Every one of them tends to go to the park or the river.
But despite this,our children are growing up naturedeprived(剝奪).I spent my boyhood climbing trees.These days,children are robbed of the ancient freedom,due to problems like crime,traffic,the loss of the open space and strange new ideas about what is best for children,that is to say,things that can be bought,rather than things that can be found.
The truth is to be found elsewhere.A study in the US:families had moved to better housing and the children were assessed for ADHD—Attention Deficit Hyperactivity Disorder(注意力缺陷多動(dòng)癥).Those whose accommodation had more natural views showed an improvement of 19%;those who had the same improvement in material surroundings but no nice view improved just 4%.
ADHD is one of the great problems of modern childhood.One study after another indicates that contact with nature gives huge benefits to ADHD children.However,we spend money on drugs rather than on green places.
The life of old people is measurably better when they have access to nature.The increasing concern for the growing population of old people is in quality rather than quantity of years.And study after study finds that a garden is the single most important thing in finding that quality.Even problems with crime and aggressive behaviour are reduced when there is contact with the natural world.
We need the wild world.It is essential to our wellbeing,our health and our happiness.
(1)According to the author,people enjoy
A.jogging on the street
B.running in the gym
C.shopping in the supermarket
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(2)From the second paragraph,we can see that
A.Children don't want to approach nature
B.children probably spend less time in nature nowadays
C.climbing trees will certainly do good to the children
D.children tend to be happier as a result of their material satisfaction
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A.Children with ADHD can be cured.
B.Children's performance at school is greatly improved.
C.Problems with crime and violent behavior will easily be solved.
D.A garden nearby improves the quality of old people's life.
(4)what is the main idea of this passage?
A.Access to nature improves our life.
B.Nature treats children for ADHD.
C.Getting close to nature reduces crime.
D.Man can't live without natural areas.發(fā)布:2025/1/6 16:30:6組卷:0引用:1難度:0.5 -
2.It is widely believed that biodiversity(生物多樣性)is promoted to save species.But in reality species exist only as part of ecosystems and cannot survive unless their ecosystems are protected along with as much as possible of the diversity they contain.
Protecting habitats(棲息地)is important for keeping biodiversity.In 2003,over 102,000 habitats covering nearly 19 million square kilometres,or 11.5% of the world's land surface,were under some form of protection.Though this is a great improvement since 1962,when just 1,000 protected habitats were listed,it is still not considered enough to stop the ecocide that is endangering the world's biodiversity.
For a number of environmentalist,protecting the world's 25 biodiversity hotspots(熱點(diǎn)地區(qū))is critical to saving habitats and species.But many hotspots are endangered already,having lost up to three-quarters of their original plants.
The poor state of most biodiversity hotspots results directly from population growth and migration(遷移) into these areas.A study found that by the mid-1990s around 1.1 billion people lived in these hotspots.Moreover,the annual population growth rate in these areas was 1.8%,higher than the global average of 1.4%.The PAI report concluded that human-related environmental changes will continue to put pressure on hotspots.Therefore,keeping biodiversity requires paying close attention to population size.
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