When a leafy plant is under attack, it doesn't sit quietly. Back in 1983,two scientists,Jack Schultz and Ian Baldwin, reported that young maple trees (枫树) getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plants send through the air is a mixture of chemicals known as volatile organic compounds,VOCs for short.
Scientists have found that all kinds of plants give out VOCs when being attacked. It's a plant's way of crying out. But is anyone listening? Obviously. Because we can watch the neighbors react.
Some plants give out smelly chemicals to keep insects away. But others do double duty. They give out smells designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was launching now becomes lunch.
In study after study, it appears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking,stay safer because they heard the alarm and knew what to do.
Does this mean that plants talk-to-each-other? Scientists don't know. Maybe the first plant just made a cry of pain or was sending a message to its own branches, and so in effect,was talking to itself. Perhaps the neighbors just happened to "overhear” the cry. So information was exchanged,but it wasn’t a true, intentional back and forth.
Charles Darwin, over 150 years ago,imagined a world far busier, noisier and more intimate (亲密的) than the world we can see and hear. Our senses are weak. There's a whole lot going on.
1. What does a plant do when it is under attack?A.It makes noises. | B.It stands quietly. |
C.It gets help from other plants. | D.It sends out certain chemicals. |
A.The attackers will get attacked |
B.The insects will gather under the table. |
C.The plants will get ready to fight back. |
D.The attackers will give out smelly chemicals. |
A.talk to one another on purpose |
B.warn people of a coming danger |
C.protect themselves against insects |
D.help their neighbors who are under attack |
A.The world is changing faster than ever. |
B.People have stronger senses than before. |
C.We don't fully understand the world. |
D.People in Darwin's time were more imaginative |
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【推荐1】With the first quarter of 2021 crossed out of your calendar, have you stuck with your New Year’s resolutions? If yes, congratulations! Keep on doing it! However, it won’t surprise anyone if you are among the majority of people who fail to make any changes.
Procrastination, meaning delaying actions for one reason or another, may play an important part here. For example, when we read a book or write articles, the efficiency will decrease if we have a cell phone close by and we have to finish the plans next day.
Apart from procrastination, overconfidence may also be part of the problem. Israeli-American behaviorist Daniel Kahneman has identified something called “planning fallacy ”. This means we believe our own projects will proceed as planned even though similar tasks took more time.
Why do we keep making this mistake? In his book, Thinking, Fast and Slow, Kahneman says it’s because of “optimism bias” . He also says we underestimate the time we will need. In one famous example, planners originally estimated the Sydney Opera House would be completed by 1963. It was actually completed in 1973, an entire decade later. “Optimism and even overconfidence can generate false beliefs, leading us to overrate our abilities,” Kahneman wrote.
According to US writer Steve Pavlina, we could make a to-do list of upcoming tasks, and write down a rough estimate for how long we expect each task to take. Chinese news site Qdaily also noted, “People could use historical data in a proper manner. Previous experiences can help them see future trends.” Another way is to try and be more objective — take more of an “outsider” view. The ability to think about your experiences from a more detached point of view, rather than an immersed one, is important.
These methods aren’t enough to send a man to the moon. You also should take action right now.
1. What is the text?A.A news report. | B.A short story. | C.A book review. | D.An explanation article. |
A.The task is too difficult. | B.We don’t like to take action. |
C.We lack confidence. | D.We overrate our abilities. |
A.Ways to overcome optimism bias. | B.Opinions on oncoming tasks. |
C.Benefits of an outsider view. | D.Effects of previous experiences. |
A.These methods can make you more confident. |
B.These methods are not as effective as imagined. |
C.Using these methods can not guarantee success. |
D.Landing on the moon needs other ways besides these methods. |
【推荐2】Thomas Edison received a patent(专利) for his kinetoscope(电影放映机) on August31, 1887. It was a machine for viewing moving pictures. Edison had hoped to combine his no invention with the phonograph(留声机), which he had invented 10 years earlier. He thought that people would like to watch moving pictures that went along with the sound. He was not able to make them work together. The kinetoscope, however, was a popular attraction by itself. A person looked through small holes in a box-like machine and saw pictures in action. One of the first films made showed a man sneezing.
A problem with this invention was that only one person could view the moving pictures at a time. By 1891, Edison had invented a projector that showed the film on a screen. Many people could watch together.
In 1893, Edison built a motion-picture studio. He made over 300 silent films. Most of them were short. That was because the pictures flashed, or shook a lot. It was hard for people to watch more than 10 minutes at a time.
The first films were mostly of real events. They would show famous people walking somewhere, cars on a street, burning houses, and other news stories. Then comedies and short dramas were made.
Edison’s movie studio closed in 1918. By then other companies were also making films. Better cameras were made. Sound was added. Then color came along. Today, movies are among the most popular forms of entertainment.
1. What do we know about the first kinetoscope?A.It was a machine to play pictures with sound. |
B.It was invented 10 years earlier than phonograph. |
C.Many people were able to see films together with it. |
D.Only one person could see moving pictures with it at a time. |
A.A film player. |
B.An electric lamp. |
C.A programme. |
D.A talking machine. |
A.People didn't like long films. |
B.The film stories were really short. |
C.The film pictures were not very steady. |
D.People could only watch a short time at a time. |
A.The trouble in making films. |
B.The efforts of Edison in the development of films. |
C.Why Edison invented the phonograph. |
D.How Edison improved the kinetoscope. |
【推荐3】One of the most firmly established idea of manliness is that a real man doesn’t cry. Although he might cry a bit at a funeral, he is expected to quickly regain control. Crying openly is for girls. One study found that women cry significantly more than men do—five times as often, on average, and almost twice as long per period.
Historically, however, men usually cried, and no one saw it as shameful. For example, in the Middle Ages, knights cried only because they missed their girlfriends. In The Knight of the Cart, no less a hero than Lancelot weeps at a brief separation from Guinevere. There’s no mention of the men in these stories trying to hold back or hide their tears. They cry in a crowded hall with their heads held high. Nor do their companions make fun of this public crying; it’s universally regarded as an admirable expression of feeling.
So where did all the male tears go? The most obvious possibility is that this is the result of changes as we moved from an agricultural society to one that was urban and industrial. In the Middle Ages, most people spent their lives among those they had known since birth. If men cried, they did so with people who would sympathize. But from the 18th to 20th centuries, the population became increasingly urbanize, and people were living in the midst of thousands of strangers. Furthermore, changes in the economy required men to work together in factories and offices where expressions of feelings and even personal conversations were discouraged as time wasting.
Yet human beings weren’t designed to hide their feelings, and there’s reason to believe that restraining tears can be harmful to your well-being. Research from the 1980s has suggested a relationship between stress-related illnesses and not enough crying. Crying is also, somewhat related with happiness and wealth. Countries where people cry the most tend to be richer and more confident.
1. In history, people considered it ________ for men to cry in public.A.manly | B.shameful |
C.ridiculous | D.acceptable |
A.By offering descriptions. | B.By analyzing effects. |
C.By making comparisons. | D.By giving definitions. |
A.Tony who lives alone and seldom expresses himself. |
B.Emily who is outgoing but sometimes sobs in public. |
C.Arthur who is under great stress but never shed a tear. |
D.Rebecca who sometimes cries but quickly regain control. |
A.Men Don’t Cry. Why? | B.Weeping Is for Women |
C.Who Cry More? Men or Women? | D.Weeping Makes a Weak Man |
【推荐1】After the death of her nature-loving mother, Margaret Renkl tenderly placed in an antique jar the “soft white hair” left behind in her mother’s hairbrush. Years passed. When it no longer carried the scent (气味) she treasured, Renkl laid the hair across a tree branch in her yard. This act was meant as a direct invitation to the birds in her yard, and it was accepted: A bird used the hair for the nest it was building.
Renkl devotes only a half-page to this story, but it conveys the beautiful interaction of human and other animal lives at the heart of The Comfort of Crows. Starting in winter and continuing through the seasonal round, Renkl brings alive in 52 chapters her love for the animals and plants in her half-acre (半英亩) yard in Tennessee and in nearby parks. Equally moving, she admits her desperation at the human-caused crisis the natural world faces, and her determination not to back off.
Her determination is more than lip service. She cures a neighborhood fox against a skin disease, with the help of a trap, a bit of bacon, and advice from an animal doctor; ensures that leaves from the trees in her yard are not gathered so that insects overwinter and hungry birds can dine there; fills a garden with milkweed in support of monarch butterflies.
With these steps, Renkl refuses to give up in the face of human-caused global warming that is changing our environment and harming other species. In these days of climate crisis, the phenomenon of ecological anxiety is real. In order to seize opportunities to help, many of us do require fuel to restore our spirits. Find that fuel in Renkl’s chapters of The Comfort of Crows. The animals and plants so cherished by Renkl need us now more than ever.
1. What is the central theme of Renkl’s The Comfort of Crows?A.Personal preference towards country life. | B.Fond memories of close family members. |
C.Profound disappointment at climate crisis. | D.Amazing interactions between man and nature. |
A.Renkl’s efforts in protecting animals. | B.Renkl’s service in the neighborhood. |
C.Renkl’s attempts to treat an injured fox. | D.Renkl’s determination to preserve the yard. |
A.Indifferent yet realistic. | B.Concerned yet active. |
C.Pessimistic yet tolerant. | D.Regretful yet hopeful. |
A.To introduce the beauty of rural life. | B.To present the daily routine of Renkl. |
C.To recommend an inspirational book. | D.To provide advice on nature protection. |
【推荐2】On the last Monday in May, people in the United States celebrate Memorial Day. This federal holiday honors members of the American military who died at war. Schools and government offices close. Most people in the US have this day off from work. People celebrate Memorial Day with outdoor parades.
Most Americans consider it the start of summer though the season really begins in June. With so many people off work, Memorial Day has also become a popular shopping day. However, on most occasions Memorial Day is a serious and even sorrowful holiday. Those who have lost family members at war visit burial sites to decorate the graves. They place flowers, wreaths and US flags on the graves.
Memorial Day comes from a tradition that began after the US Civil War called Decoration Day. The Civil War was a very dark time in the US history. Historians have long thought that about 620,000 soldiers died in the fighting. However, new research suggests that the dead numbered about 750,000.
In 1868, about 5,000 people gathered at Arlington National Cemetery on the edge of Washington, D. C. They decorated more than 10,000 graves of Union and Confederate soldiers. They called it Decoration Day. bone
The tradition spread to other areas of the country. In 1873, New York State called it Memorial Day and was the first to make it a legal-holiday. Other States allowed, but not all. Some southern states had (and-still have) separate celebrations that honor only dead Confederate soldiers.
After World War I ended in 1918, Memorial Day became a day to honor all American soldiers killed at war. In 1971, Congress passed a law making it an official federal holiday all over America.
1. What's the purpose of Memorial Day in America?A.To mark the start of summer. | B.To let people enjoy themselves. |
C.To show respect to dead soldiers. | D.To set a holiday to encourage soldiers. |
A.Sad. | B.Casual. |
C.Pleasant. | D.Relaxing. |
A.In 1971. | B.In 1873. |
C.In 1918. | D.In 1868. |
A.Celebration Activities of Memorial Day in the US |
B.The Prospect of American Memorial Day |
C.Members Honored on American Memorial Day |
D.The Evolution on Memorial Day in the US |
【推荐3】As the name suggests, alpine football, a variation of the world’s most popular competitive sport, is played on mountain slopes (斜坡) in order to make it more difficult.
Most competitive sports usually take place on level playing fields, but in the case of alpine football, one of the main conditions is that the field must be steep (陡峭的). It sounds totally impossible, but a group of football fans in the Austrian Alps claim that it’s the best way to play their favorite sport. They got the idea for alpine football during the 2014 World Cup, while watching a boring game and brainstorming for ways to make it more challenging.
“We were watching the games and found them very boring,” alpine football co-inventor Franz Mair said. “Then, Peppi Knunz, the other inventor of the sport, said to me, ‘The way they play isn’t hard enough and they should try running up and down our mountains. They’d soon be out of breath.’ And then we thought they might not even be able to play, but we would manage it!”
Flat ground is very hard to find in the Alps, so it’s most often used for more important things than playing football. Therefore, fans of the sport in such mountainous areas decided to turn lemons into lemonade and use the mountain slope to invent a new game. Now, locals take pride in only playing alpine football.
“Anyone can play on flat ground,” says Alois Gantner, trainer of the Supa BUrschis team. “In Montafon, we only play on the steepest slopes we can find.”
The rules of alpine football are the same as for the regular football, with the only difference being the need for strong legs and great energy to fight against gravity on the uneven field.
1. What inspired the group of football fans to invent alpine football?A.The mountainous area in the Alps. | B.Their great passion for football. |
C.A boring game they watched. | D.A desire to compete in the World Cup. |
A.Finding a suitable field. | B.Fighting against gravity. |
C.Deciding on the game rules. | D.Keeping normal breath. |
A.proud. | B.desperate. | C.helpless. | D.considerate. |
A.Alpine football shares most of the rules of regular football. |
B.All the football matches don’t take place on level fields. |
C.Both alpine football and regular football are popular in Montafon. |
D.Flat ground in Alps is often used for important things like playing football. |