Because plants cannot move or talk, most people believe that they have no feelings and that they cannot receive signals from outside. However, this may not be completely true.
People who studied plants have found out that plants carry a small electrical charge (电荷). It is possible to measure this charge with a small piece of equipment called “galvanometer”. The galvanometer is placed on a leaf of the plant, and it records any changes in the electrical field of the leaf. Humans have a similar field which can change when we are shocked or frightened.
A man called Backster used a galvanometer for his studies of plants and was very surprised at his results. He found that if he had two or more plants in a room and he began to destroy one of them -- perhaps by pulling off its leaves or by pulling it out of its pot-then the galvanometer on the leaves of the other plants showed a change in the electrical field. It seemed as if the plants were signaling a feeling of shock. This happened not only when Backster started to destroy plants, but also when he destroyed other living thing such as insects (昆虫).
Backster said that the plants also knew if someone had destroyed a living thing some distance away, because they signalled when a man who had just cut down a tree entered the room.
Another scientist, named Sauvin, achieved similar results to Backster’s. He kept galvanometers fixed on his plants all the time and checked regularly to see what the plants were doing. If he was out of the office, he telephoned to find out about the signals the plants were sending. In this way, he found that the plants were sending out signals at the exact times when he felt strong pleasure or pain. In fact, Sauvin could cause a change in the electrical field of his plants over a distance of a few miles simply by thinking about them.
1.Backster was surprised at the results of his studies because _____.
A. he destroyed an insect
B. he destroyed a plant by pulling off its leaves
C. he found that plants could express feelings of shock
D. he found that plants could move and speak after all
2.The plants sent out signals _____.
A. only when Backster Started to destroy plants
B. when Backster destroyed plants or other living things
C. only when he destroyed things such as insects
D. only when Backster placed the galvanometer on the leaves of the plants
3.The scientist called Sauvin _____.
A. did not agree with Backster’s ideas
B. did not get the same sort of results as Backster did
C. got different results from Backster’s
D. found out some of the same things that Backster did
4.Which of the following is true according to the passage?
A. Sauvin could make his plants send out signals some distance away.
B. A tree will signal when it has been cut down.
C. The electrical charge plants carry may shock or frighten us.
D. Plants have feelings because they can receive signals without moving.
高一英语阅读理解简单题
Because plants cannot move or talk, most people believe that they have no feelings and that they cannot receive signals from outside. However, this may not be completely true.
People who studied plants have found out that plants carry a small electrical charge (电荷). It is possible to measure this charge with a small piece of equipment called “galvanometer”. The galvanometer is placed on a leaf of the plant, and it records any changes in the electrical field of the leaf. Humans have a similar field which can change when we are shocked or frightened.
A man called Backster used a galvanometer for his studies of plants and was very surprised at his results. He found that if he had two or more plants in a room and he began to destroy one of them -- perhaps by pulling off its leaves or by pulling it out of its pot-then the galvanometer on the leaves of the other plants showed a change in the electrical field. It seemed as if the plants were signaling a feeling of shock. This happened not only when Backster started to destroy plants, but also when he destroyed other living thing such as insects (昆虫).
Backster said that the plants also knew if someone had destroyed a living thing some distance away, because they signalled when a man who had just cut down a tree entered the room.
Another scientist, named Sauvin, achieved similar results to Backster’s. He kept galvanometers fixed on his plants all the time and checked regularly to see what the plants were doing. If he was out of the office, he telephoned to find out about the signals the plants were sending. In this way, he found that the plants were sending out signals at the exact times when he felt strong pleasure or pain. In fact, Sauvin could cause a change in the electrical field of his plants over a distance of a few miles simply by thinking about them.
1.Backster was surprised at the results of his studies because _____.
A. he destroyed an insect
B. he destroyed a plant by pulling off its leaves
C. he found that plants could express feelings of shock
D. he found that plants could move and speak after all
2.The plants sent out signals _____.
A. only when Backster Started to destroy plants
B. when Backster destroyed plants or other living things
C. only when he destroyed things such as insects
D. only when Backster placed the galvanometer on the leaves of the plants
3.The scientist called Sauvin _____.
A. did not agree with Backster’s ideas
B. did not get the same sort of results as Backster did
C. got different results from Backster’s
D. found out some of the same things that Backster did
4.Which of the following is true according to the passage?
A. Sauvin could make his plants send out signals some distance away.
B. A tree will signal when it has been cut down.
C. The electrical charge plants carry may shock or frighten us.
D. Plants have feelings because they can receive signals without moving.
高一英语阅读理解简单题查看答案及解析
Plants can’t communicate by moving or making sounds, as most animals do. Instead, plants produce volatile compounds (挥发性化合物) —— chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from such volatile compounds to attract insects such as bugs and bees.
Plants can also discover volatile compounds produced by other plants. A tree under attack by hungry insets, for instance, may give off these chemicals in order to let other trees know about the attack. In response, the other trees may send off their chemicals to keep the bugs away —— or even chemicals that will attract the bugs’ natural enemies.
Now scientists have created a quick way to understand what plants are saying: a chemical sensor (传感器) called an “electronic nose”. The “e-nose” can tell such compounds as plants make. When plants are attacked, scientists say, the e-nose could help quickly decide whether plants are being eaten by insects. But today, the only way to spot such insects is to inspect individual plants by observing them. This is a challenging task for managers of greenhouses, including those that can house thousands of plants. The research team is working with an e-nose that can recognize volatile compounds. Inside the device, 13 sensors chemically react with volatile compounds based on the interactions (相互作用), and then the e-nose will give off electronic signals that the scientists can analyze by using computer software.
To test the e-nose, the team presented it with healthy leaves from cucumber, pepper and tomato plants, all being common greenhouse crops. Then scientists collected samples of the air around damaged leaves from each type of crop. These plants had been damaged either by insects or by scientists who made holes in the leaves with a hole punch (打孔器).
The e-nose, it turns out, can identify healthy cucumber, pepper and tomato plants based on the volatile compounds they produce. It could also identify tomato leaves that had been damaged. But even more impressive, the device could tell which type of damage —— by insects or with a hole punch —— had been done to the tomato leaves.
With some fine-tuning (微调), a device like the e-nose can one day be used in greenhouses to quickly spot harmful bugs, the researchers say. A device like this can also be used to identify fruits that are perfectly ripe and ready to pick and eat, says Natalia Dudareva, a biochemist at Purdue University in West Lafayette, India, who studies smells of flowers and plants. Hopefully, scientists believe, the device can bring large benefits to greenhouse managers in the near future.
1.We learn from the text that plants communicate with each other by ______.
A.making some sounds |
B.waving their leaves |
C.producing some chemicals |
D.sending out electronic signals |
2.What did the scientists do to find out if the e-nose worked?
A.They fixed 13 sensors inside the device. |
B.They presented it with all common crops. |
C.They collected different damaged leaves. |
D.They do tests on damaged and healthy leaves. |
3.According to the writer, the most amazing thing about the e-nose is that it can ______.
A.pick out ripe fruits quite expertly |
B.spot the insects in a very quick way |
C.tell different damages to leaves |
D.recognize unhealthy tomato leaves |
4.We can infer from the last paragraph that the e-nose ______.
A.is unable to tell the smell of flowers |
B.is not yet tested in greenhouses |
C.is designed by scientists at Purdue |
D.is helpful in killing harmful insects |
高一英语阅读理解中等难度题查看答案及解析
Many gardeners believe that “talking” to their plants helps them grow---it turns out that they may not be crazy after all. According to the scientists from the University of Exeter, plants may keep communicating with each other through a secret “unseen” language.
For their experiment, the scientists picked a cabbage plant that is known to send out a gas when its surface is cut. In order to get video evidence of the communication, they changed the cabbage gene by adding the protein---luciderase(虫荧光素酶), which is what makes fireflies(萤火虫) glow in the dark.
When the changed cabbage plant was in full bloom, they cut a leaf off with a pair of scissors, and almost immediately, thanks to the luciderase, they could see the plant sending out “methyl jasmonate(茉莉酸甲酯)”.
While this was a known fact, what was surprising was the fact that the minute this gas began to give out, the nearby cabbage plants seemed to sense some kind of danger and started to send out a gas that they normally have to keep predators(捕食者) like caterpillars(毛虫) away.
What the scientists are not sure is whether the plants are trying to warn the other leaves or the near plants about the danger---something that will require further research However, the team, which is led by Professor Nick Smirnoff, is quite excited about the findings because this is the first time it has been proved that plants do not live a passive life, but actually move, sense and even communicate with each other.
However, before you get all concerned, they are quite sure that plants do not feel the pain when they are cut, since they do not have nerves---so go ahead and bite into that juicy carrot!
1.What’s the best title of the passage?
A. Plants Can Send Some Gas
B. Plants Can Communicate with Each Other
C. The “Unseen” Language of Plants
D. Plants Can’t Feel Pain
2.What does the underlined word “they” in Paragraph 1 mean?
A. Gardeners B. Plants
C. Scientists D. Fireflies
3.When the plant sent out methyl jasmonate, which of the following statements is NOT TRUE?
A. The nearby cabbage plants seemed to sense some kind of danger.
B. The nearby cabbage plants started to send out a gas.
C. The nearby cabbage plants tried to warn the near plants.
D. The nearby cabbage plants communicated through a secret language.
4.According to the experiment, plants ________________.
A. don’t live a passive life
B. can feel pain when they are cut
C. can warn the other leaves about danger
D. can talk with each other
高一英语阅读理解中等难度题查看答案及解析
Many gardeners believe that “talking” to their plants helps them grow---it turns out that they may not be crazy after all. According to the scientists from the University of Exeter, plants may keep communicating with each other through a secret “unseen” language.
For their experiment, the scientists picked a cabbage plant that is known to send out a gas when its surface is cut. In order to get video evidence of the communication, they changed the cabbage gene by adding the protein---luciderase(虫荧光素酶), which is what makes fireflies(萤火虫) glow in the dark.
When the changed cabbage plant was in full bloom, they cut a leaf off with a pair of scissors, and almost immediately, thanks to the luciderase, they could see the plant sending out “methyl jasmonate(茉莉酸甲酯)”.
While this was a known fact, what was surprising was the fact that the minute this gas began to give out, the nearby cabbage plants seemed to sense some kind of danger and started to send out a gas that they normally have to keep predators(捕食者) like caterpillars(毛虫) away.
What the scientists are not sure is whether the plants are trying to warn the other leaves or the near plants about the danger---something that will require further research However, the team, which is led by Professor Nick Smirnoff, is quite excited about the findings because this is the first time it has been proved that plants do not live a passive life, but actually move, sense and even communicate with each other.
However, before you get all concerned, they are quite sure that plants do not feel the pain when they are cut, since they do not have nerves---so go ahead and bite into that juicy carrot!
1.What’s the best title of the passage?
A. Plants Can Send Some Gas
B. Plants Can Communicate with Each Other
C. The “Unseen” Language of Plants
D. Plants Can’t Feel Pain
2. What does the underlined word “they” in Paragraph 1 mean?
A. Gardeners B. Plants
C. Scientists D. Fireflies
3.When the plant sent out methyl jasmonate, which of the following statements is NOT TRUE?
A. The nearby cabbage plants seemed to sense some kind of danger.
B. The nearby cabbage plants started to send out a gas.
C. The nearby cabbage plants tried to warn the near plants.
D. The nearby cabbage plants communicated through a secret language.
4.According to the experiment, plants ________________.
A. don’t live a passive life
B. can feel pain when they are cut
C. can warn the other leaves about danger
D. can talk with each other
高一英语阅读理解中等难度题查看答案及解析
If an idea or statement is _________ (不可相信的), it seems so unlikely to be true that you
cannot believe it.
高一英语单词拼写中等难度题查看答案及解析
Every 30 seconds there is an earthquake. But don't worry because most are so weak that they cannot be felt. Only a few big ones hurt people.
Many earthquakes happened in China, such as the big one is Sichuan last year. Thousands of people died in it. So it's important to know what to do when one hits. Here are some tips on how to stay safely in an earthquake.
If you are indoors during an earthquake, hide under a desk. Stay away from windows and anything that could fall on you.
If you are outdoors, move to a clear place. Try to be away from trees, signs, buildings and streetlights. These could fall on you.
If you are in a shop and far from the door, don't try to run to outside and rush for exits(出口). Everyone will be doing that and you’ll find it hard getting out. Don't get into a lift during an earthquake. Just hide under some strong covers near you.
When an earthquake has ended, be careful because after-shocks may still happen. These are just as dangerous as the earthquake itself. So stay under the desk until you make sure it's safe to get up.
If you are at home and you smell gas, open the windows and get out of the building as quickly as you can. A gas line in your house may be broken. This could be very dangerous.
1.Most earthquakes are too ________ to hurt people.
A. strong B. weak
C. dangerous D. heavy
2.If you are outdoors, it would be safe to ________.
A. go to a playground B. stay under a tree
C. stand by the window D. stand under the streetlights
3.If you're in a shop and far from the door, you'd better __________.
A. rush to the door right away B. run after the people quickly
C. rush to a lift to get down D. hide yourself under a cover near you
4.If you are at home and you smell gas, you should________
A. Stay under the desk until you make sure it's safe to get up.
B. Open the windows and get out of the building as quickly as you can.
C. Hide under some strong covers near you.
D. Stay away from windows and anything that could fall on you.
5.This passage tells us __________.
A. how dangerous the earthquake is
B. how to be safe in an earthquake
C. we shouldn’t be afraid of the earthquake
D. how does the earthquake come into being
高一英语阅读理解中等难度题查看答案及解析
Most people who move to a foreign country or culture may experience a period of time when they feel very homesick and have a lot of stress .This feeling is often called‘culture shock’ . 1. There are four general stages of cultural adjustment.
The first stage is usually referred to as the excitement stage. Upon arriving in a new environment, you’ll be interested in the new culture, everything will seem exciting, everyone will seem friendly and helpful and you’ll be overwhelmed(不知所措) with impressions. 2. and you have little meaningful experience of the culture.
The second stage is sometimes called the withdrawal stage. The excitement you felt before changes to frustration (沮丧)as you find it difficult to deal with the problems that arise. simple things like shopping and going to the bank are challenges. It is at this stage that you are likely to feel anxious homesick. 3. .
Culture shock doesn’t exist long. You gradually get into the‘recovery’ stage. At this point, you’ll have a routine, and you’ll feel less lonely as you start to understand and accept the way things are done and the way people behave in your new environment. Customs and traditions are clearer and easier to understand. 4.
The last stage is the ‘home’ stage – this is the point when people start to feel at home in the new culture.
There is a fifth stage to this process. If you decide to return home after a long period in a new culture, you may experience what is called ‘reverse culture shock’. 5. you may notice things about your home culture that you had never noticed before, and some of the ways people do things may seem strange.
A. It is a great challenge to learn the totally new culture.
B. This is the stage which is referred to as “culture shock”
C. During this stage you are taking in these impressions passively
D. Some people experience “culture shock” more sharply than others.
E. This means that you may find aspects of your own culture “foreign”
F. At this stage ,you’ll deal with new challenges with humor rather than anxiety.
G. It’s important to learn how to deal with it if you’re to adapt to the new culture.
高一英语信息匹配中等难度题查看答案及解析
Most people believe that ____knowledge is power and that having ____ good command of a
foreign language is of great importance .
A./ , / , | B.the , a , | C./ , a , | D. /, the |
高一英语单项填空简单题查看答案及解析
Many teenagers feel that the most important people in their lives are their
friends. They believe that their family members, especially their parents, don’t
know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only turn to their friends for advice.
It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children’s growing up, because friends can discuss something difficult to say to their family members.
However, parents often try to choose their children’s friends for them. Some parents may even stop their children from meeting their good friends. The question of “choice” is an interesting one. Have you ever thought of the following questions?
Who choose your friends?
Do you choose your friends or your friends choose you?
Have you got a good friend your parents don’t like?
1. Many teenagers think their____ know them better than their parents do.
A.friends | B.teachers |
C.brothers and sisters | D.classmates |
2.When teenagers stay alone, the usual way of communication is to___.
A.turn to their friends |
B.talk with their parents |
C.have a discussion with their family |
D.talk with their friends on the phone |
3.The passage suggests (暗示) that___ .
A.parents cannot choose friends for their children successfully |
B.perhaps some children’s friends are chosen by their parents |
C.children won’t let their parents choose friends for them |
D.parents often try to choose their children’s friends for them |
4.Which of the following do you think is RIGHT according to the passage?
A.Parents should like everything their children enjoy. |
B.In all families, children can choose everything they like. |
C.Parents should try their best to understand their children better. |
D.Teenagers can only turn to their friends for help. |
高一英语阅读理解中等难度题查看答案及解析
Many teenagers feel that the most important people in their lives are their friends. They believe that their family members, especially their parents, don't know them as well as their friends do. In large families, it is often for brothers and sisters to fight with each other and then they can only go to their friends for advice.
It is very important for teenagers to have one good friend or many friends. Even when they are not with their friends, they usually spend a lot of time talking among themselves on the phone. This communication is very important in children's growing up, because friends can discuss something difficult to say to their family members.
However, parents often try to choose their children's friends for them. Some parents may even stop their children from meeting their good friends. The question of "choice" is an interesting one. Have you ever thought of the following questions?
Who choose your friends?
Do you choose your friends or your friends choose you?
Have you got a good friend your parents don't like?
1.Many teenagers think their_____ know them better than their parents do.
A. friends B. teachers C. brothers and sisters D. classmates
2.When teenagers stay alone, the usual way of communication is to_____.
A. go to their friends B. talk with their parents
C. have a discussion with their family D. talk with their friends on the phone
3.Which of the following is different in meaning from the sentence "Some parents may even stop their children from meeting their good friends."?
A. Some parents may even not allow their children to meet their good friends.
B. Some parents may even ask their children to stay away from their good friends.
C. Some parents may even not let their children meet their good friends.
D. Some parents may want their children to stop to meet their good friends.
4.The passage suggests (暗示) that _______.
A. Parents cannot choose friends for their children successfully.
B. Perhaps some children's friends are chosen by their parents.
C. Children won't let their parents choose friends for them.
D. Parents often try to choose their children's friends for them.
5.Which of the following do you think is right according to the passage?
A. Parents should like everything their children enjoy.
B. In all families, children can choose everything they like.
C. Parents should try their best to understand their children better.
D. Teenagers can only go to their friends for help.
高一英语阅读理解简单题查看答案及解析