Male frogs use territorial calls to warn off frogs that are entering their territory. 1.. So they do not waste energy by making territorial calls when they detect those frogs near their territory. However, if an unknown frog approaches the land they claim as their own, males will aggressively let out a territorial call.2..
Warning calls are employed to warn other frogs of some nearby danger and are commonly heard when an attacker comes near.3.. If an attacker attacks a frog, the frog will make a call almost like a scream, which is intended to scare the attacker. This scream is almost always made when the attacker succeeds in grasping the frog because, should it be greatly surprised, the attacker may release the frog, which might permit the animal to make its escape.
4., which is employed when another frog is caught hold of by mistake. This regularly happens during the mating season, when male frogs eager for a mate wrongly grasp another male. In other cases, females that have already mated may make this call when different male frogs catch them.5..Whenever a male catches a female of another species, the female gives the release call to inform the male that he has made a mistake and should let go.
A.Frog calls further differ between species
B.The final major call made by frogs is the release call
C.To the human ear, frog mating calls may all sound similar
D.Frogs make short, sharp, loud sounds while they hurry away
E.Males can recognize the calls their neighbors make from afar
F.If the strange frog does not leave immediately, it may be attacked
G.There are some special occasions when frogs belonging to different species mix with one another
Although we live in an era where everything seems to be available immediately, our study suggests that today’s kids can delay gratification(满足感) longer than children in the 1960s and 1980s,“ said University of Minnesota psychologist Stephanie M. Carlson.” This finding stands in great contrast with the assumption by adults that today’s children have less self-control than previous generations.
The original marshmallow(棉花糖) test conducted by researchers at Stanford University involved a series of experiments in which children aged between 3 and 5 years were offered one treat that they could eat immediately or a larger treat if they waited. Researchers then left the room to see how long the children would wait and watched from behind a one-way mirror.
Interestingly, today's adults thought that children nowadays would be more impulsive and less able to wait, Carlson found. "Our findings serve as an example of how our beliefs can be wrong and how it's important to do research,” said co-author Yuichi Shoda, PhD at the University of Washington.
The researchers offered several possible explanations for why children in the 2000s waited longer than those in prior decades. They noted a statistically significant increase in IQ scores in the last several decades. Another explanation may be society's increased focus on the importance of early education, according to Carlson. The primary objective of preschool changed from largely custodial care (监护) to school readiness in the 1980s. Parenting also has changed in ways that help promote the development of executive function, such as being more supportive of children's self-control, the researchers noted.
Walter Mischel of Columbia University, who co-authored this paper, noted that “while the results indicate that the children’s ability to delay is not weakened on the marshmallow test, the findings do not speak to their willingness to delay gratification when faced with the many temptations now available in everyday life.”
1.According to the passage, what is the adults' assumption about today's children?
A.They are not easy to please.
B.They are less able to control themselves.
C.They don't like things that are easy to get.
D.They have different personalities from previous generations.
2.What does the underlined word "impulsive " in Paragraph 3 mean?
A.productive B.considerate
C.clear-minded D.hot-headed
3.What did the researchers find about children in the 2000s?
A.They are more prepared to go to school.
B.They are not as clever as previous generations.
C.They are taught self-control only by their teachers.
D.They don’t need any custodial care in their early childhood.
4.What does the author want to tell readers in the last paragraph?
A.Most children nowadays can't resist the temptations of everyday life.
B.Children chose to delay gratification willingly in the marshmallow test.
C.The test can’t accurately measure children's willingness to delay gratification.
D.Children’s ability to delay gratification is weakened because there are many temptations.
Nine mini cheetahs robots appeared in the field to show their athletic abilities. The four-legged machines, mini versions of the larger and heavier Cheetah 3, began with a warm-up run across the field.
Though they may be similar to their predecessors(原先的事物), the new four-legged machines are much more advanced. Weighing just nine kilograms, the robots can bend and swing their legs wide, giving them the ability to walk either right-side-up or upside down. They can also travel through uneven places at about twice the speed of an average person’s walking pace and quickly right themselves if kicked to the ground and perform unbelievable 360-degree backflips(后空翻) from a standing position.
Unlike the Cheetah 3, the main robots are built using cheap and easy to find parts. This means that if an arm or a motor breaks, it can be easily replaced. “If you wanted to add another arm, you could just add three or four more of these motors,” said lead developer Benjamin Katz, “You could put these parts together, almost like Legos.”
The team, which currently has ten of the four-legged machines, plans to build additional units in other university robotic labs. “A big part of why we built this robot is that it makes it easy to experiment and just try crazy things, because the robot is very strong and doesn’t break easily, and if it does break, it’s easy and not very expensive to fix, ” said Katz.
He believes that this will enable other engineers to teach the robots different skills. “Eventually, I’m hoping that we could have a robotic dog race through an obstacle course, where each team controls a mini cheetah with different ways, and we can see which strategy is more effective. That’s how you accelerate research,” said Katz.
The team’s reason for developing the robots extends beyond entertainment. They hope that someday packs of “cheetahs” will assist first respondents with search and recovery missions following natural disasters like earthquakes, work alongside firefighters, and even respond to military emergencies.
1.Which of the following best describes the mini robot?
A.Delicate. B.Portable.
C.Complex. D.Flexible.
2.Why are cheap materials used for the mini robot?
A.To test it out in other fields. B.To produce it on a large scale.
C.To make sure it’s easy to repair. D.To make people afford to buy it.
3.What’s the main purpose of making the “cheetahs”?
A.To replace firefighters. B.To entertain people in a way.
C.To bring more convenience to people. D.To help people in dangerous situation.
4.Where is the text most likely from?
A.A diary. B.A magazine.
C.A novel. D.A guide book.
In many-even most-space-themed films, whenever Earth faces a disaster, the solution is always leaving the planet in spaceships. But the latest Chinese sci-fi movie,“The Wandering Earth”，offers a different idea.
In the film, which is adapted from a short story by Chinese sci-fi writer Liu Cixin, Earth is in danger of being destroyed by the dying Sun. Humans around the world work together to build a huge engine system that will push Earth away from the Sun. Instead of leaving Earth-again-this time we’re taking it with us.
This idea didn't come from nowhere. For thousands of years, Chinese people have had a special emotion at their “homeland” in their hearts and minds. One old saying is “luo ye gui gen", which means returning to one’s homeland in old age, like fallen leaves returning to the roots of their tree. Or look to an ancient poem: “The season called the White Dew ( 白露) begins tonight/Nowhere as in our native place is the moon so bright.” These both show the strong relationship that Chinese people have had with their homeland.
This is probably what sets “The Wandering Earth" apart from Hollywood-style space films. “What is Chinese sci-fi?”Guo Fan. the film’s director, said in an interview. “Films that can really express Our cultural and spiritual core ( 精神核心) can be called Chinese sci-fi. Otherwise, we' re just copying others and telling the same American stories.
And the makers of “The Wandering Earth” may have chosen the best time to tell the Chinese sci-fi story. The film was screened on Feb 5, the first day of Chinese New Year. It was a time when many people had just made the hard journey back to their hometowns. So to them, there is only one possible way to tell the story: Earth goes wherever humans go, because it's our home.
1.What can we know about “The Wandering Earth” from the passage?
A.It follows the latest film fashion.
B.It is based on Liu Cixin' s book.
C.It is a film copying foreign movies.
D.It offers us a new experience of watching films.
2.What does Para 3 mainly talk about?
A.The suitable season when the film was screened.
B.The famous poems mentioned in the film.
C.The common points between Chinese films and foreign films.
D.The cultural background of the film.
3.The makers of this film choose Feb5 to put on it probably because_________.
A.it was the Spring Festival and many people have time to see it.
B.many old people want to return to their hometown.
C.it can cause many people’s common feelings at this time.
D.Chinese people usually celebrate together on that day.
4.What can we infer from Guo Fan's words?
A.American sci-fi fails to express its culture.
B.“The Wandering Earth" tells a foreign story.
C.Chinese sci-fi should have its own features.
D.Science fiction films should express certain spiritual cores.
Jane Austen's final novel, Persuasion, is the story of Anne Elliot and her love for Frederick Wentworth. Persuaded to refuse his suggestion of marriage, Anne spends eight years unhappy until he re-enters her life.
Details
Stock(现货) Out of stock
Prize Uncertain ( no recent updates from the publisher)
Publisher Pan Macmillan
Publishing House Macmillan Collector' s Library
Library of Congress England- Social life and customs novel
Description
What happens when we listen to others instead of our heart? That is the theme of Jane Austen's final novel, Persuasion. After Anne Elliot follows the advice of her dearest friend and breaks off her engagement to Frederick Wentworth, a handsome man with neither good luck nor rank, happiness escapes from her. Eight years later, Anne remains unmarried, and her father spends money carelessly, which has brought her family poverty. When a newly wealthy Frederick returns from the Napoleonic Wars, Anne realizes her feelings remains unchanged. But will Frederick forgive her and offer Anne a second chance at love?
The novels of Jane Austen will transport readers imaginary worlds and provide excitement, inspiration and entertainment for years to come. All of these novels have attractive pictures and will brighten our life.
Author' s Introduction
Born in 1775, Jane Austen published four of her six novels anonymously ( 匿名地), and she passed away in 1817. Her work was not widely read until the late nineteenth century, and her fame grew from then on. Known for her amusing, clever and sharp insight into social traditions, her novels about love, relationships, and society are popular. In novels such as Pride and Prejudice, Mansfield Park and Emma, she developed her careful analysis of life back that time through descriptions of the middle class in small towns. Her sharp descriptions of ordinary people have given her novels timeless popularity. She has earned a place in history as one of the most loved writers of English literature.
1.The novel Persuasion is________.
A.a love story
B.no longer published
C.mainly about advice on speaking skills
D.based on Jane Austen’s real experience
2.Why does Anne Elliot choose not to marry Frederick Wentworth?
A.Because she doesn't like him anymore.
B.Because she is convinced to do so by her friend.
C.Because she is afraid that he will die in the Napoleonic Wars.
D.Because she doesn't think he is rich enough to support her family.
3.We know from the passage Jane Austen's works_________.
A.have disappeared from the market
B.are about the life of the middle class in big cities in England
C.focus on the life of the middle class in small places in her days
D.have brought her great popularity she always wanted to have
假定你是李华，正在加拿大参加短期访问交流活动。你偶然在一本近期的杂志里看到一篇介绍中国端午节的文章，但文章里没有注明日期是中国农历，且文中所配图片是赛艇而不是龙舟。请你给编辑部写一封信，指出其中的错误并要求更正。
内容包括：
1. 指出错误，给出正确信息；
2. 要求更正；
3. 赞赏对方介绍中国文化。
注意：1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。
3. 参考词汇：中国农历 the Chinese Lunar Calendar
赛艇 rowing boat 龙舟 dragon boat
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
