Think plants are just boring green things that you use for food and decoration? Think again! Plants are able to do some pretty awesome things that you’re probably totally unaware of.
Researchers have discovered that plants have the ability to communicate with an underground network made up of fungus (真菌) , which serves the plants in many ways. Tomato plants use the fungus web to warn each other of their own unhealthy conditions. Trees connected through the fungus network could move nutrients (养分) to and from each other. It is believed that larger trees move nutrients to smaller ones to help them to survive.
Not only that, but they can also damage unwelcome plants by spreading poisonous chemicals through the fungus. It sounds like the plant world had the Internet before we did.
Some plants have a rather impressive line of defense against being eaten. When sensing they are being swallowed, they give off a chemical into the air that attracts the insect’s natural enemy. The enemy attacks the bug, thus saving the plants. This is basically the plant kingdom version of getting your older brother to beat up that kid who steals your lunch money.
You might be aware that humans and animals have an internal clock. But did you know that plants also have this clock? This means they can prepare for certain times of day just like we do. Is it because they can react to light at sunrise? In a study, scientists found that plants use the sugars they produce to keep time, which help to regulate the genes responsible for the plant’s own internal clock. So, in a sense, ―wake up with petunias (矮牵牛) is just as valid as ―wake up with the chickens.
Nature is full of surprises. So for those of you who didn’t know the wonders of plants, now you do.
1.How many ways does the network of fungus serve the plants?
A. Two. B. Three.
C. Four. D. Five.
2.What does the underlined words ― “your older brother” in Paragraph 4 refer to?
A. The chemical given off by plants. B. The insect’s natural enemy.
C. The bug attacked by the enemy. D. The plant to be eaten by the insect.
3.What helps the plant keep time?
A. The sugars produced by itself. B. Its own genes.
C. The time of sunrise. D. Its response to light.
4.What is the author’s purpose in writing the text?
A. To show his love of different plants.
B. To share his study on some awesome plants.
C. To introduce the unknown abilities of plants.
D. To make people aware of plant protection.
高三英语阅读理解困难题
Think plants are just boring green things that you use for food and decoration? Think again! Plants are able to do some pretty awesome things that you’re probably totally unaware of.
Researchers have discovered that plants have the ability to communicate with an underground network made up of fungus (真菌) , which serves the plants in many ways. Tomato plants use the fungus web to warn each other of their own unhealthy conditions. Trees connected through the fungus network could move nutrients (养分) to and from each other. It is believed that larger trees move nutrients to smaller ones to help them to survive.
Not only that, but they can also damage unwelcome plants by spreading poisonous chemicals through the fungus. It sounds like the plant world had the Internet before we did.
Some plants have a rather impressive line of defense against being eaten. When sensing they are being swallowed, they give off a chemical into the air that attracts the insect’s natural enemy. The enemy attacks the bug, thus saving the plants. This is basically the plant kingdom version of getting your older brother to beat up that kid who steals your lunch money.
You might be aware that humans and animals have an internal clock. But did you know that plants also have this clock? This means they can prepare for certain times of day just like we do. Is it because they can react to light at sunrise? In a study, scientists found that plants use the sugars they produce to keep time, which help to regulate the genes responsible for the plant’s own internal clock. So, in a sense, ―wake up with petunias (矮牵牛) is just as valid as ―wake up with the chickens.
Nature is full of surprises. So for those of you who didn’t know the wonders of plants, now you do.
1.How many ways does the network of fungus serve the plants?
A. Two. B. Three.
C. Four. D. Five.
2.What does the underlined words ― “your older brother” in Paragraph 4 refer to?
A. The chemical given off by plants. B. The insect’s natural enemy.
C. The bug attacked by the enemy. D. The plant to be eaten by the insect.
3.What helps the plant keep time?
A. The sugars produced by itself. B. Its own genes.
C. The time of sunrise. D. Its response to light.
4.What is the author’s purpose in writing the text?
A. To show his love of different plants.
B. To share his study on some awesome plants.
C. To introduce the unknown abilities of plants.
D. To make people aware of plant protection.
高三英语阅读理解困难题查看答案及解析
Think plants are just boring green things that you use for food and decoration? Think again! Plants are able to do some pretty awesome things that you’re probably totally unaware of.
Researchers have discovered that plants have the ability to communicate with an underground network made up of fungus (真菌) , which serves the plants in many ways. Tomato plants use the fungus web to warn each other of their own unhealthy conditions. Trees connected through the fungus network could move nutrients (养分) to and from each other. It is believed that larger trees move nutrients to smaller ones to help them to survive.
Not only that, but they can also damage unwelcome plants by spreading poisonous chemicals through the fungus. It sounds like the plant world had the Internet before we did.
Some plants have a rather impressive line of defense against being eaten. When sensing they are being swallowed, they give off a chemical into the air that attracts the insect’s natural enemy. The enemy attacks the bug, thus saving the plants. This is basically the plant kingdom version of getting your older brother to beat up that kid who steals your lunch money.
You might be aware that humans and animals have an internal clock. But did you know that plants also have this clock? This means they can prepare for certain times of day just like we do. Is it because they can react to light at sunrise? In a study, scientists found that plants use the sugars they produce to keep time, which help to regulate the genes responsible for the plant’s own internal clock. So, in a sense, ―wake up with petunias (矮牵牛) ‖ is just as valid as ―wake up with the chickens.‖
Nature is full of surprises. So for those of you who didn’t know the wonders of plants, now you do.
1.How many ways does the network of fungus serve the plants?
A. Two. B. Three.
C. Four. D. Five.
2.What does the underlined words ―your older brother‖ in Paragraph 4 refer to?
A. The chemical given off by plants. B. The insect’s natural enemy.
C. The bug attacked by the enemy. D. The plant to be eaten by the insect.
3.What helps the plant keep time?
A. The sugars produced by itself. B. Its own genes.
C. The time of sunrise. D. Its response to light.
4.What is the author’s purpose in writing the text?
A. To show his love of different plants.
B. To share his study on some awesome plants.
C. To introduce the unknown abilities of plants.
D. To make people aware of plant protection.
高三英语阅读理解困难题查看答案及解析
Green invaders are taking over America. Not invaders from space, but plants! You might not think of plants as dangerous, but in this case they are threatening nature’s delicate food chain.
The invaders are plants brought here from other countries to make gardens and yards look pretty. Ever since people started to arrive on America’s shores, they have carried along trees, flowers, and vegetables from other places. Now there are so many of those plants, they are crowding out the native plants that have lived here since before human settlers arrived.
And that’s a problem, says Dr. Doug Tallamy. He’s insect expert at the University of Delaware. He explains that almost all the plant-eating insects in the United States are specialized, which means they eat only certain plants. Monarch butterfly caterpillars(幼虫),for example, dine on milkweed. If people cut down milkweed and replace it with another plant, the butterflies will not have the food source that they need to survive.
But the trouble doesn’t stop there. When insects can’t get the right plants to eat and they die off, then the birds don’t have enough bugs for their meals. Tallamy points out that almost all migrating birds depend on insets to feed their young.
“We cannot let the plants and animals around us disappear.” says Tallamy, “The way to preserve them is to give them food to eat. But when we plant non-native plants, we are clobbering the food chain, because then we don’t have the insects the birds need to live.”
Fewer of the right plants mean fewer bugs, and fewer bugs mean fewer birds. And that’s bad for the Earth, because we need a variety of living things to keep the planet healthy and beautiful.
The good news is, garden centers sell native plants. “Just Google ‘native plants’ and your location, and you can find out which plants really belong where you live,” says Tallamy
1.How did green invades arrive at America?
A.They fell down from space.
B.They floated to the America’s shores.
C.They were brought in from foreign countries
D.They has lived here since human settlers arrived
2.According to Dr.Tallamy, which of the followings about the insects in the US is NOT true?
A.Almost all the plant-eating insects in a place eat certain plants.
B.Monarch butterfly caterpillars can’t survive without milkweed.
C.If insects can’t eat the right plants, they will find another one.
D.The insects’ death will greatly affect the migrating birds’ survival
3.The underlined word “clobber” in Paragraph 5 is closest in meaning to _________.
A.protect B. damage C. create D. collect
4.We can know whether a plant is native by _________.
A.Googling on the Internet B. asking Dr. Doug Tallamy
C. looking up in books D. searching in garden
5.What is the best title of the pass age?
A.Green invaders——local living things
B. Green invaders——dangerous food chain
C.Green invaders——environmental protectors
D. Green invades——threat to local nature
高三英语阅读理解中等难度题查看答案及解析
Just as some people think that certain numbers are lucky or unlucky, others believe that we can use numbers to understand our personalities, or predict what will happen to us in the future.
Numerology is a way of using numbers to describe a person’s character, and to make predictions about future life events. Numerologists use the numbers 1-9, 11 and 22 — also known as the “master” numbers — to help a person understand his or her personality, life goals, and destiny.
Numerologists consider your Life Path number to be the most significant because this number describes your character. To find this number, add together all the numbers in your date of birth. For example, a person born on April 25, 1985 would add the month (4), to the numbers of the date (2+5), plus the numbers of the birth year (1+9+8+5). In this case the total is 34, so this person’s life path number is 7(3+4). Numerologists believe that people with this number are peaceful and affectionate but can also be very reserved.
Your Expression number describes your talents and predicts how you should use these to fulfill your destiny in life. Numerologists assign a number between 1 and 9 to each of the letters in your name. These numbers are then added together in the same way as before to find your Expression number. Numerologists can also do calculations to predict when the most challenging periods of your life will be.
Numerologists also believe that the day a person is born is important. Each day of the month has a character description. People born on the fourth are said to be responsible, honest, and stubborn. People born on the fifteenth have very strong attachments to family and home. Those who celebrate their birthday on the thirtieth are artistic, creative, and imaginative, and often make good writers.
If we calculate the numerical value of our name and birth date, numerologists believe that we can learn more about our personalities. They also believe that we can predict our destinies, how our lives will progress, and what challenges we may face along the way. To the numerologist, numbers can be used in many more ways than we think.
1.If a person was born on November 8, 1995, what is his Life Path number?
A. 7 B. 8 C. 9 D. 11
2.To understand your abilities and how to use them in your life, you should calculate your ______.
A. Life Path number B. Expression number
C. birthday D. name and birth date
3.According to the passage, a person born on the fifteenth tends to be _______.
A. stubborn B. home-loving C. artistic D. imaginative
4.According to the passage, numerologists believe that _________.
A. Life Path number can be used to predict a person’s most challenging life periods
B. Expression number is the most meaningful for people to learn a person’s character
C. numbers can help people better understand themselves
D. numbers can be used to change a person’s future
5.The function of the passage is __________.
A. to raise doubts about the usefulness of numerology
B. to persuade readers about the benefits of the practices it describes
C. to describe some of the numerological practices and their purpose
D. to tease those who take such beliefs seriously
高三英语阅读理解困难题查看答案及解析
Scientists are working to develop crop plants that can reduce the amount of water used for agriculture. Almost sixty percent of the world’s freshwater withdrawals from rivers, lakes and other water resources go toward irrigating fields.
Scientists are using biotechnology as well as traditional breeding methods to develop water-saving crops to feed a growing world.
Thomas “Tommy” Carter is a plant scientist in North Carolina. He works for the Agricultural Research Service in the United States Department of Agriculture. He leads Team Drought, a group of researchers at five universities. They have been using conventional breeding methods to develop and test soybeans that can grow well under dry conditions.
Tommy Carter started working on drought-resistant soybeans in 1981. His research has taken him as far as China, where soybeans have been grown for thousands of years.
Farmers in the United States, however, have grown soybeans for only about a century. Tommy Carter says the soybeans they grow are for the most part genetically similar. More differences could better protect crops against climate changes that can reduce production. Those changes include water shortages which could increase from global warming.
The Agriculture Department has a soybean germplasm(胚质) collection, a collection of genetic material passed from one generation to the next. Members of Team Drought studied more than 2,500 examples from the collection.
They looked at ones from the home of soybeans, Asia. They searched for germplasms that could keep plants from weakening and wilting (凋谢)during hot, dry summers in the United States.
Tommy Carter says they found only five. But these slow-wilting lines, he says, produce four to eight bushels（英斗）more than normal soybeans under drought conditions. The yield depends on location and environment.
Scientists are also working on other plants that either use less water or use it better, or both. For example, companies like Monsanto, DuPont and Syngenta have been developing corn with reduced water needs. Monsanto expects to be ready in a few years to market its first corn seeds genetically engineered to resist drought.
1.According to the passage, scientists try to find out how to _______.
A. grow crops with less water
B. increase crop production
C. feed a growing world
D. save the world’s water resource
2.Why did Tommy Carter come to China?
A. He likes traveling.
B. China has a long history.
C. He’s doing research into soybeans.
D. He works for the Agricultural Research Service.
3.What’s inferred from the passage?
A. Climate changes lead to global warming.
B. Water shortages contribute to global warming.
C. Genetically different soybeans need much water to grow.
D. Genetically different soybeans help to fight against damaging climate changes.
4.What do we know about slow-wilting plants talked about in the passage?
A. They yield big profits.
B. They can grow in almost any climate.
C. They seem to be drought-resistant.
D. They need much water for their growth.
高三英语阅读理解中等难度题查看答案及解析
Plants are boring. They just sit there photosynthesizing （光合作用） while animals have all the fun. Right? Not so much. A new study has found that there is a long history of interactions between ants and plants. The ant and plant co-evolution （协同进化） started with ants feeding on plants and plants evolving ant-friendly features.
Plants make a number of different structures that are specific for ant use. Some plants have evolved features that persuade ants into defending them from attack from other insects and even mаmmаlѕ. Тhеѕе іnсludе hollow thorns that аntѕ will live іnѕіdе, or ехtra nесtаr (琼浆) оn lеаvеѕ or stems for the ants to eat. Some ants will just cheat and take the nectar and run, but some will stick around and attack anything that tries to hurt the plant. Other plants get ants to help them move their seeds around, by providing them with rich food packets attached to the seeds. The ant will pick up the seed and carry it away, eat the food packet, and leave the seed - often in a nutrient-rich area where it'll grow better, and since it's farther away from its parent, they won't have to compete for resources.
But scientists weren't sure how the evolutionary relationship between ants and plants got started. If evolution is an arms race between species developing ways to make use of their neighbors, then scientists wanted to know whether plants or ants fired the first shot. It was a chicken-and-egg question, whether things started with ants developing behaviors to take advantage of plants, or plants evolving structures to take advantage of ants.
The history of ants and plants evolving together goes back to the time of the dinosaurs, and it's not easy to tell from fossils who fired the first shot. However, it is a question of little significance. Scientists say their study maters because it provides a look at how these widespread and complex interactions evolved.
1.Some plants attach food packets to their seeds in order to .
A.reward the ants B.make a fool of ants
C.provide nutrition for the seeds D.get the seeds moved around
2.What does Paragraph 2 mainly tell us?
A.How plants and ants interact. B.What ants do to protect plants.
C.How plants and ants survive attacks. D.Why plants and ants need co-evolution.
3.Which is true about the evolutionary relationship between ants and plants?
A.Ants depended more upon plants. B.It caused a race for better evolution.
C.How it got started was uncertain. D.It was of little value for future studies.
4.What's the author’s purpose of writing the passage?
A.To introduce a science research method.
B.To inform readers of a latest research finding
C.To arouse readers' interest in science research.
D.To criticize people's traditional views about plants.
高三英语阅读理解简单题查看答案及解析
Are you going to school for something your parents pushed on you? Are you doing things just because others expect you to? I found many ____in my Life Coaching lessons. The biggest one some students are having is that they are living a life someone else has ____for them.
Why on earth would someone live a life that someone else wants for him? Usually, the main ___is his parents. When we’re growing up we must do what our parents want us to do. We really don’t have our own ____. The problem is that most parents are overly ____that they know what’s best for their children. Many parents ____their children to make certain educational ____. Some parents won’t ____their children’s college, unless the children learn ____what the parents decide.
Parents aren’t the only ones ____their ideas on my students. I have some students who are doing jobs they really ____, but their friends or relatives would not support them if they apply for a _____job they’d like better.
Are you allowing others to decide what life you are living now? If so, it is a ____.
Even if you are about to ____for college and you find that the only way your parents will pay school fees for you is that you choose Business, but you want to ____Art… And at this moment I don’t ___that you choose the major you have no ____. Follow your heart.
Remember, ____choose your major or job that you don’t like just because of others’ ideas. If you choose what you like, you will be a(n) ____ person and will positively influence others. Live the life you want from now on____you will get happiness.
1.A.students B.problems C.examples D.results
2.A.designed B.trained C.introduced D.expressed
3.A.rule B.reason C.news D.information
4.A.excuses B.complaints C.wishes D.choices
5.A.excited B.worried C.confident D.careful
6.A.expect B.allow C.agree D.teach
7.A.challenges B.practices C.experiences D.achievements
8.A.turn to B.learn about C.pay for D.drop in
9.A.regularly B.nearly C.gradually D.exactly
10.A.offering B.placing C.depending D.trying
11.A.hate B.enjoy C.appreciate D.accept
12.A.familiar B.similar C.different D.terrible
13.A.mistake B.chance C.decision D.character
14.A.send B.look C.head D.wait
15.A.refuse B.learn C.change D.copy
16.A.remember B.trouble C.mind D.suggest
17.A.interest B.explanation C.advantage D.preparation
18.A.sometimes B.never C.often D.still
19.A.beautiful B.clever C.happy D.honest
20.A.but B.and C.or D.although
高三英语完形填空中等难度题查看答案及解析
Most museums are just for looking. But today some of them have things for you to touch. The signs say, "________!"
A. Be touching B. To touch C. Do touch D. No touch
高三英语单项填空中等难度题查看答案及解析
Most museums are just for looking. But today some of them have things for you to touch. The signs say, "________!"
| A．Be touching | B．To touch | C．Do touch | D．No touch |
高三英语单项填空中等难度题查看答案及解析
---Do you think Peter is a good partner?
--- Not really! There are some things that are not easy to ________ , and his laziness is one.
A. put aside B. put up with
C. think of D. get along with
高三英语单项填空中等难度题查看答案及解析