Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
UBC Professor Simard explains how trees are much more complex than most of us ever imagined. Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition “depending on who needs it”.
Nitrogen(氮)and carbon are shared through miles of underground fungi(真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons(神经元)in our brains, and when one tree is destroyed, it affects all.
Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.
“We didn't take any notice of it .” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
1.What would be the best title for the passage?
A. Old Trees Communicate Like Humans
B. Young Trees Are In Need Of Protection
C. Trees Contribute To Our Society
D. Trees Are More Complex Than You Think
2.In Simard's opinion, trees _______
A. compete for survival
B. protect their own wealth
C. depend on each other
D. provide support for dying trees
3.We can learn from the passage that____________.
A. “mother trees” are usually of no use to other trees.
B. Charles Darwin had the same thought as Simard.
C. if “mother trees” are cut down, the survival for the entire forest will be affected.
D. people know much about the complex “tree societies”.
4.The underlined word “it” in the last paragraph refers to_________.
A. how “tree societies” work
B. how trees grow old
C. how forestry industry develops
D. how young trees survive
高二英语阅读理解中等难度题
Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
UBC Professor Simard explains how trees are much more complex than most of us ever imagined. Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition “depending on who needs it”.
Nitrogen(氮)and carbon are shared through miles of underground fungi(真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons(神经元)in our brains, and when one tree is destroyed, it affects all.
Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.
“We didn't take any notice of it .” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
1.What would be the best title for the passage?
A. Old Trees Communicate Like Humans
B. Young Trees Are In Need Of Protection
C. Trees Contribute To Our Society
D. Trees Are More Complex Than You Think
2.In Simard's opinion, trees _______
A. compete for survival
B. protect their own wealth
C. depend on each other
D. provide support for dying trees
3.We can learn from the passage that____________.
A. “mother trees” are usually of no use to other trees.
B. Charles Darwin had the same thought as Simard.
C. if “mother trees” are cut down, the survival for the entire forest will be affected.
D. people know much about the complex “tree societies”.
4.The underlined word “it” in the last paragraph refers to_________.
A. how “tree societies” work
B. how trees grow old
C. how forestry industry develops
D. how young trees survive
高二英语阅读理解中等难度题查看答案及解析
Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
UBC Professor Simard explains how trees are much more complex than most of us ever imagined .Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition “depending on who needs it”.
Nitrogen(氮) and carbon are shared through miles of underground fungi(真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons(神经元)in our brains, and when one tree is destroyed, it affects all.
Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend .She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow .When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.
“We didn't take any notice of it .” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
1.The underlined sentence “the opposite is true” in Paragragh2 probably means that trees________.
A. compete for survival
B. depend on each other
C. provide support for dying trees
D. protect their own wealth
2.“Mother trees” are extremely important because they________.
A. look the largest in size in the forest
B. know more about the complex “tree societies”
C. pass on nutrition to young trees
D. seem more likely to be cut down by humans
3.The underlined word “it” in the last paragraph refers to .
A. how “tree societies” work
B. how trees grow old
C. how forestry industry develops
D. how young trees survive
4.What would be the best title for the passage?
A. Old Trees Communicate Like Humans
B. Young Trees Are In Need Of Protection
C. Trees Contribute To Our Society
D. Trees Are More Awesome Than You Think
高二英语阅读理解简单题查看答案及解析
Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
UBC Professor Simard explains how trees are much more complex than most of us ever imagined.
Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition “depending on who needs it”.
Nitrogen (氮) and carbon are shared through miles of underground fungi (真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons (神经元) in our brains, and when one tree is destroyed, it affects all.
Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.
“We didn’t take any notice of it,” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
1.The underlined sentence “the opposite is true” in Paragraph 3 probably means that trees ________.
A. depend on each other B. protect their own wealth
C. compete for survival D. provide support for dying trees
2.“Mother trees” are extremely important because they________.
A. know more about the complex “tree societies”
B. seem more likely to be cut down by humans
C. look the largest in size in the forest
D. pass on nutrition to young trees
3.The underlined word “it” in the last paragraph refers to ________.
A. how young trees survive B. how “tree societies” work
C. how forestry industry develops D. how trees grow old
4.What would be the best title for the passage?
A. Old Trees Communicate Like Humans
B. Young Trees Are in Need of Protection
C. Trees Are More Fantastic Than You Think
D. Trees Contribute to Our Society
高二英语阅读理解中等难度题查看答案及解析
You may be surprised to learn that English gets 30 to 45 percent of its words from French. The reason goes back to the year 1066, when Norman forces invaded(入侵)what is now Britain. The Normans were from northern France and spoke French. During the Norman occupation, French became the language of England’s rulers and wealthy class. This lasted for more than 300 years. Other people in England continued to speak English during this period.
Over time, the two languages combined and shared words. Some researchers believe that about 10,000 French words eventually entered the English language. However, although English took many French words, their meanings have not always stayed the same. Sometimes the differences in meanings can be very important, and lead to funny or strange situations if the words are used in the wrong way.
Take, for example, the French word college. In English, college can often be used in place of the word university, or sometimes as a school within a university. However, in French, college actually means “middle school”, or the level of schooling for students in grades five or six through eight.
There are many other similar words in the two languages with completely different meanings. In English, the word chat is a verb which means “to talk casually”; but in French, the word chat is the word for an animal: a cat.
If an English speaker says someone is jolly, that means they are cheerful or friendly. But in French, jolie means someone is good-looking or pleasant to look at. In any case, both are nice things to say to someone.
1.What does the author stress about the French words in English?
A. Their spelling forms. B. Their changes in history.
C. Their puzzles for English. D. Their different meanings.
2.What does a Frenchman mean if he says he likes a chat?
A. He likes a kind of pet. B. He wants to have a talk.
C. He hates to speak English. D. He prefers to chat in French.
3.What is the French word “jolie” used to do?
A. Replace “jolly” in English. B. Describe people's looks.
C. Refer to people’s happiness. D. Prove the change in French.
4.What is the text mainly about?
A. Comparison between two languages. B. Difficulty in grasping English.
C. French words in English. D. Development of English.
高二英语阅读理解困难题查看答案及解析
It’s funny that Howard___ speak to you like your boss.
A. might B. would C. should D. must
高二英语单项填空中等难度题查看答案及解析
I’d appreciate ______ if you would like to teach me how to use the new computer.
A. that B. you C. it D. this
高二英语单项填空中等难度题查看答案及解析
Learning experiences happen to us throughout our lives. Not long ago, I had one that I would like to __16__.
I was going to Marblehead with my sailboat team. The team was racing down the highway at 85 mph __17_ we realized we were __18_. Luckily, we saw a rest area ahead. I had a brand-new $20 bill. I was so __19_ because I had never had that kind of cash before. But spending it on __20__ seemed like throwing it away. We all rushed into the pizza line. __21__ I got a pizza and a drink, and walked to my table. About halfway through the meal, I __22_ I had not actually handed any money to the cashier. I had just __23__ out, and nobody had noticed. I felt terrible.
My conscience (良心) opened its mouth and swallowed me in one big bite. I couldn’t __24__ over it. I just couldn’t go back to the cashier and __25__ for my stolen pizza. I was so upset that I __26__ to give myself the pleasure of an ice cream for __27__ that someone would say, “Hey, Jeff, why not you use the change __28__ the pizza instead of that nice, new $20 bill?” I was not so __29__ of my cash now. For the next two years, whenever I was __30__ of the “pizza incident”, I would say to myself, “Don’t think about it…”
I have learned two things from this __31__. Maybe I was a fool for __32__ in to my conscience, and being too stupid to appreciate a __33__ pizza. But the real lesson is that even if you get away with what you have done, your conscience will __34__ up with you.
This reflects the saying, “Coward (懦夫) dies a thousand deaths, a hero dies one.” I was a coward and have felt terrible about that incident at least a thousand times. If I had been a “__35__” and gone back to pay for the pizza, I would have felt a little uncomfortable about it only one, or maybe twice.
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高二英语完型填空简单题查看答案及解析
It would be a big surprise to Charles if he ____________ the good news that he has won the scholarship.
A. know B. knows C. knew D. had known
高二英语单项填空中等难度题查看答案及解析
Imagine possessing something that you loved so much. Imagine what it would feel like if you lost it. While that item may be something as simple as a doll, you would still feel very upset, but you could replace it with a new one. Now imagine losing something that you depend on for survival and cannot be replaced. That is what it would be like if we lost the natural environment around us.
Firstly, I believe the environment should be preserved because it supports human life. One of the largest examples is that we get all of our food and drinks from the environment. If the environment were to be destroyed beyond revival, then the human race would be over in months. Scientists have yet to find another planet with similar conditions to the Earth, and if it’s found, we don’t have the technology to get to that planet on time.
Secondly, I believe that the environment serves as an amazing educational tool for students. When I was in second grade, I had an absolute interest in animals. When we had a field trip to the Daggerwing Nature Center, I was very excited. When we got there, I could hardly believe what I was seeing. There was a bridge to get to the main building, and under the bridge was a small swamp (沼泽) with turtles, fish, and my personal favorite, alligators. I was so surprised that I almost ran into the tour guide. We walked into the building and saw various animals in their habitats. I was so inspired by this visit. Six years later, I have taken an animal behavior class for three weeks. Meeting by chance with the environment can inspire people, and if preserved it will continue to inspire people.
In conclusion, the environment is so valuable because it can’t be replaced, keeps us alive, and serves as a great educational tool.
1.The first paragraph leads to the theme of the text by ________.
A. describing a process B. presenting differences
C. analyzing causes D. showing similarities
2.The underlined word “revival” in the paragraph 2 is the nearest in meaning to ________.
A. health B. recovery
C. activity D. revision
3.Why did the author take a class on animal behavior?
A. Because his teacher encouraged him to do so.
B. Because he wanted to be an animal expert.
C. Because he was inspired by animals he once saw.
D. Because he thought it a promising subject.
4.Which of the following can be the best title for the text?
A. Why the Environment Is So Important
B. Which Planet Can Replace the Earth
C. How People Should Protect the Environment
D. What People Can Do to Stop Pollution
高二英语阅读理解困难题查看答案及解析
The surprising experiment I am about to describe proves that air is all around you and that it presses down upon you. Air pressure is a powerful force. When you swim underwater, you can feel water pushing on your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer (层) of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.
The following experiment is an easy one that you can do at home. But make sure that you are supervised (监督), because you will need to use matches. Now for the experiment.
What you need
● hard-boiled egg without the shell
● A bottle with a neck slightly smaller than the egg
● A piece of paper
● A match
Method
1) Check that the egg will sit firmly on the neck of the bottle.
2) Tear the paper into pieces and put them into the bottle.
3) Light the paper by dropping a burning match into the bottle.
4) Quickly sit the egg on the neck of the bottle.
Result
Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.
Why it happened?
As the paper burns, it needs oxygen and uses up the oxygen (air) in the bottle. The egg acts as a scale in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air presses against the egg, and then the egg is pushed into the bottle! This proves that air is all around and that it is pressing down on us.
1.Why is there the need to take care when you are doing the experiment?
A. The bottle could break.
B. You need to light the paper with a match.
C. The egg needs to be shelled (脱壳).
D. The egg has to be perfectly placed on the neck of the bottle.
2. How did the egg get into the bottle?
A. The oxygen inside the bottle sucked the egg in.
B. It became soft without the shell.
C. The neck of the bottle was wide enough.
D. The outside air pressure forced it into the bottle.
3.The experiment is carried out to prove___________..
A. water pushes on your body when you swim underwater
B. the earth is surrounded by a layer of air called the atmosphere
C. the pressure of air around us has a powerful force
D. the air pressure is not equalized around us
高二英语阅读理解中等难度题查看答案及解析