1 . Cats don't avoid people who upset their owners, proving they're just as disloyal as we always suspected, a new study confirms. The study will be a blow to enthusiastic cat lovers across the country, as their kitty friends appear to have lived up to their reputation of being aloof and uncaring. But dog owners can cheer that man's best friend still has their back.
Having previously showed that dogs avoided a person who behaved negatively towards their owner, researchers tried the same experiment with cats to see how they reacted. For the study, cats watched as their owner tried unsuccessfully to open a transparent container to take out an object, and then requested help from a person sitting nearby. Some people helped the pet owner and others didn't, before they all offered food to the animals.
In the dog experiment, most dogs preferred not to take food from people who didn't help their owners. But cats weren't phased and showed no preference between helpers and passive bystanders, eating food from whoever offered it.
The study's 'lead author Hitomi Chijiiwa wrote: “One possible reason for domestic cats showing no sign of a negativity bias(偏见) might be that cooperation is not typical of this species. Whereas dogs are known to cooperate with humans and conspecifics(同类) in various real and experimental contexts， the same is not true of cats. Domestic cats originated from a less sociable ancestor than did dogs, and they have not been subjected to artificial selection for cooperation with humans. However,group hunting did not evolve in small cats, because the size of their typical prey items remained unchanged even as cat communities grew bigger."
“Thus,cats can be considered as at least potentially 'social' and 'flexible' in terms of social structure, but not 'cooperative'. The ability to evaluate others based on indirect experiences might be restricted to more cooperative species.”
1. What does the underlined word “aloof” in Paragraph 1 probably mean?| A．Distant | B．Aggressive |
| C．Sensitive | D．Greedy. |
| A．They tend to show no preference for food. |
| B．They are likely to wait for food without doing anything. |
| C．They refuse to eat food from those offending their owners. |
| D．They don't care about food givers' attitude to their owners. |
| A．They originated from a less flexible ancestor. |
| B．They lack the ability to directly evaluate others. |
| C．They haven't been trained since their domestication. |
| D．They haven't evolved through cooperation with humans. |
| A．By referring to previous findings. | B．By giving examples. |
| C．By analyzing cause and effect | D．By explaining a concept. |
2 . A New Jersey couple and a homeless man have been accused of making up a feel﹣good story that raised more than ＄400,000 through GoFundMe.
The couple, Kate McClure and Mark D'Amico, and the man, Johnny Bobbitt Jr., face a charge of second-degree theft, Burlington County Prosecutor Scott Coffina said Thursday.
The couple said they met Bobbitt when he gave his last ＄20 to McClure, who was stranded on Interstate 95 in Philadelphia, so she could put gas in her car，then started the GoFundMe campaign as a way to thank him.
The paying-it-forward story that drove this fundraiser might seem too good to be true, Coffina said at a press conference.
Unfortunately, it was. The entire campaign was based on a lie.
After fees, the money of the campaign netted about ＄367, 000, all deposited into McClure's accounts, Coffina said. Bobbitt received ＄75,000, and within months McClure and D'Amico had wasted their share on buying a car, high-end handbags and trips, Coffina said. They also used it at casinos(赌场), he said.
Coffina stressed that while Bobbitt, a veteran (老兵), deserves thanks for his service to the country and sympathy for his situation; he was fully involved in the crime, using media to help "promote the dishonest campaign".
According to Coffina, McClure and D'Amico first met Bobbitt at an off-ramp（驶出匝道）near a casino they regularly went, at least a month before the GoFundMe campaign went live.
They went back to the spot a month later, Coffina said. D'Amico took a picture of McClure and Bobbitt that became the face of the GoFundMe campaign that they started hours later, Coffina said.
1. What's the actual purpose of the GoFundMe campaign started by the couple?| A．To express their appreciation for Bobbitt's help. |
| B．To help Bobbitt pay off his heavy debt. |
| C．To raise money for their own benefit. |
| D．To make people believe in Bobbitt's generosity. |
| A．Impossible to finish. |
| B．Unable to move. |
| C．Without any choice. |
| D．Out of service. |
| A．About ＄292, 000. |
| B．About ＄367, 000. |
| C．About ＄325, 000. |
| D．About ＄400, 000. |
| A．Pretending to be a veteran. |
| B．Robbing the couple of ＄75, 000. |
| C．Failing to serve his country. |
| D．Helping invent the story. |
3 . There are many interesting science experiments out there for young kids. You can surprise your friends and teachers with them. All you have to do is to put a little effort into it and you should have no problem coming up with an interesting science experiment. One such experiment is to show your friends and teachers that you can make mothballs (樟脑丸) dance!
If you want to do it, first, be sure that you have got all the necessary science kits for your science experiment.
What you need for this experiment is a glass filled half full with water. Add a little bit of vinegar (醋) to your glass of water, about 1/3 or 1/4 of a cup (60 ml), and one teaspoon (10 ml) of baking soda, and then carefully stir the mixture. Drop a few mothballs into the glass and have your audience watch. As long as the surfaces of the mothballs become fairly rough, they should begin to bounce up and down in the glass.
You can also do a similar experiment with raisins (葡萄干) and pop, such as Coca Cola. In this experiment, all you have to do is to fill a glass with Coca Cola and drop a few raisins into it. The raisins should begin to bounce up and down in the glass of Coca Cola. You can also replace the raisins with mothballs and you should get the same effect in the Coca Cola. This project works because the irregular surfaces of the mothballs and the raisins hold some CO₂ bubbles (气泡) , causing them to bounce up and down in a dancing motion.
1. The writer writes this passage to________ .| A．teach kids how to do an easy and interesting science experiment |
| B．encourage people to spend more time on science |
| C．tell us how good he is at doing science experiments |
| D．explain why some science experiments are easy |
| A．Producing mothballs. | B．Swimming mothballs. |
| C．Changing mothballs. | D．Dancing mothballs. |
| A．drink with bubbles | B．kind of vinegar |
| C．mothball | D．special kind of raisin |
| A．why Coca Cola has some CO₂ bubbles |
| B．why the mothballs bounce up and down |
| C．what scientists usually do with raisins |
| D．what people usually use Coca Cola for |
4 . Since time immemorial, people have been searching for the fountain of youth. Surprisingly, the dream of human immortality is, according to some scientists, not so far out of reach.
Professor Brian Cox, Google's Ray Kurzweil, and Tesla head Elon Musk all agree on not only the possibility of human immortality but also that it is not too far away. The solution, they say, is something called the “technological singularity”.
The singularity is a combination of humankind with computers, namely uploading the contents of one's brain onto a hard drive. In that way, a person's consciousness can stay alive after a physical body gets worse. This is based on the idea that a human brain is simply a machine, and there is, according to Professor Cox, “no reason at all why we cannot simulate (模拟) human intelligence,” using a computer.
Although Professor Cox did not say when the singularity would occur, Google's Ray Kurzweil predicts that the singularity will happen as early as 2045. By 2100, he says, human body parts will be replaceable by machine parts. Further, by uploading our brains onto a computer, we will be able to toy with it, and become “able to expand the scope of our intelligence a billion fold. ”
Elon Musk agreed with the asessments of the other scientists, even going so far as saying that the chances that we are not in a computer simulation right now are “one in billions” .
Google is preparing for a future where you can download personalities onto robots. For example, you might be able to download onto your robot a celebrity personality, or of the personality of your deceased grandmother.
The search engine giant filed a patent for this download process recently. So they definitely believe that the singularity is just around the corner. All you have to do is hold on until 2045, and soon you can effectively live in the cloud.
1. What does the underlined word “immortality” in paragraph 1 probably mean?| A．Living forever. | B．Rebirth after death. |
| C．Being perfect. | D．Continuous improvement. |
| A．By giving examples. | B．By presenting quotations. |
| C．By logically reasoning. | D．By making a description. |
| A．Computers are much smarter than humankind. |
| B．Computers can never surpass humankind at all. |
| C．Computers and humankind are quite different. |
| D．Computers can be another version of humankind. |
| A．Physically and intelligently. | B．Individually and corporately. |
| C．Psychologically and spiritually. | D．Emotionally and materially. |
5 . As a boy, I wanted to go to the South Pole. As a teenager, I decided I'd like to go to the North Pole too. And yet, I haven't done either. It had taken me 31 years to just make it to the Arctic.
I was traveling with a film crew from Northern Ireland, following the footsteps of Lord Dufferin who, in the 1850s, sailed from Scotland to the Arctic. As an early adventure tourist, he was driven by the desire to see what lay at the ends of the world.
As we sailed north, icebergs of the size of buses floated past our small boat. Finally, we reached our destination—English Bay, where Dufferin landed- and stepped off onto the horseshoe-shaped beach.
This was what I'd dreamt of: standing somewhere so pure and primitive. However, for many early polar explorers, the results were far less pleasant. The south, in particular, was source of extreme danger.
My childhood interest in the South Pole was fueled by the unsuccessful yet heroic adventures of Emest Shackleton. He died in 1922 while preparing for his fourth adventure. The stories of Robert Falcon Scott are also well-known: he and four companions died on their way back from the South Pole.
So why do explorers put themselves at such risk?
Much of it seems to lie in the purity of the challenge. Scott talked of the appeal of a place that had been “unreached and unseen by humans.” “With a view over shining lands covered by ice-sheets of inconceivable extent, you have the feeling of living over the control of death,” said Fridtjof Nansen, a Norwegian explorer.
On the homeward journey the weather turned and we were left for a few days at the mercy of a storm. We experienced a small taste of helplessness when faced with the raw power of nature. We should be grateful for the great explorers’ spirit and stories. I know I am.
1. Why did the author begin his adventure tour?| A．To assist a film crew | B．To realize a childhood dream |
| C．To memorize Lord Dufferin | D．To challenge a world record |
| A．Hard to control | B．Too far to reach |
| C．Hard to imagine | D．Too bright to view |
| A．They were trapped in icebergs | B．They were kept off the destination |
| C．They were attacked by a storm | D．They were rescued by explorers |
| A．The Appeal of the Ends of the World | B．The Dream of Traveling to the Arctic |
| C．The Victory over the Control of Death | D．The Gratitude to Great Explorers Spirit |
6 . Improve Cloud Security
Sensitive customer data has constantly been found exposed on cloud servers without password protection. To ease the problem, database software makers have been trying to make security easier for cloud database managers. At the Enigma Conference in San Francisco, Kenn White, a security manager at database software maker MongoDB, will describe a new technique, called field level encryption, to make data safer on the cloud.
Field level encryption works by scrambling data before it’s sent to a cloud database and rearranging it in order when the data is needed for use. The promise of the product is to protect the contents of a cloud database, even if bad guys access it.
MongoDB’s new feature comes as more and more companies move user data to cloud servers, rather than run their own costly data centers. It was predicted that cloud computing would be a $214 billion industry by the end of 2019. That would be up more than 17% from 2018, when it was $182 billion.
Companies have rushed to the cloud without understanding all of the possible security consequences. Many companies have left countless databases exposed, revealing personal data. A database containing details about who lives in 80 million US households was left unprotected in 2019, just like the data on Facebook users.
Database managers want to store their data in an unreadable form, but they also want to be able to find specific pieces of information in the database with a simple search term. For example, someone might want to look up health care patients by their Social Security numbers, even if those numbers are stored as random characters. To make this possible, field level encryption lets database managers encrypt a search term on their machine and send it to the database as a query. The database matches the encrypted version of the search term with the record it’s storing and then sends it back to you.
This approach only works with specific kinds of data. For example, field level encryption isn’t useful for long text entries, like notes in a patient’s medical chart, because you can’t search for individual words.
Still, for data like account numbers, passwords and government ID numbers, field level encryption protects data and maintains a usable database.
Most importantly, White said, it’s simple to set up. Database managers turn it on with a one-time configuration change when they set up the database. “That’s really powerful,” he said in an interview.
1. The underlined word “scrambling” in paragraph 2 probably means________.| A．mixing | B．collecting | C．hiding | D．storing |
| A．Secure the safety of Internet pages. | B．Protect files with a unique style of storage. |
| C．Stop bad guys from accessing the database. | D．Enable companies to store files on the cloud. |
| A．Companies should move user data to cloud servers. |
| B．Cloud computing achieved a 17% increase in 2019. |
| C．Companies may be unaware of the risks of the cloud. |
| D．No companies were willing to run their own data centers. |
| A．present some facts | B．offer security advice |
| C．introduce a technique | D．recommend a product |
7 . When he was two years old, Ben stopped seeing out of his left eye. His mother took him to the doctor and soon discovered he had cancer in both eyes. After possible treatments failed, doctors removed both his eyes. For Ben, vision was gone forever.
But by the time he was seven years old, he had developed a technique for feeling the world around him: he clicked with his mouth and listened for the returning echoes. This method enabled Ben to determine the locations of open doorways, people, parked cars, garbage cans, and so on. He was echolocating: bouncing his sound waves off objects in the environment and catching the reflections to build a mental model of his surroundings.
Echolocation may sound like an improbable feat for a human, but thousands of blind people have perfected this skill, just like Ben did. The event has been written about since at least the 1940s, when the word ''echolocation" was first invented in a science article titled “Echolocation by Blind Men , Bats, and Radar.”
How could blindness give rise to the amazing ability to understand the surroundings with one's ears? The answer lies in a gift on the brain; huge adaptability.
Mother Nature filled our brains with flexibility to adapt to circumstances. Just as sharp teeth and fast legs are useful for survival, so is the brain's ability to reset, which allows for learning, memory, and die ability to develop new skills.
In Ben's case, his brain's flexible wiring repurposed his visual cortex for processing sound. As a result, Ben had more neurons available to deal with listening information, and this increased processing power allowed Ben to interpret soundwaves in shocking detail. Ben's super-hearing proves a more general rule: the more brain area a particular sense has, the better it performs.
1. How did Ben “see” after he had his eyes removed?| A．By using a walking stick. | B．By asking others for help. |
| C．By inventing a new system. | D．By echolocating surroundings. |
| A．Skill. | B．Task. | C．Sense. | D．Invention. |
| A．He laughs best who laughs last. | B．Actions speak louder than words. |
| C．God shuts one door but he opens another. | D．Man becomes learned by asking questions. |
| A．Culture Shock. | B．Human Biology. |
| C．Scientific Technology. | D．Environmental Protection. |
8 . This year's hottest destination is Mars. On 23 July, China launched the Tianwen-1 mission to the Red Planet — one of three spacecrafts' planning to head there in 2020. This is China's second interplanetary mission, but the first that the nation has launched on its own. The other, Phobos-Grunt, was a cooperation with Russia that didn't make it out of Earth's orbit after blasting off in 2011.
The new mission, called Tianwen, translated as "questions to heaven" — consists of an orbiter, a lander and a rover, the last of which will be named via a public competition. "It's very ambitious because it's a four-part mission: there's the launch, getting into orbit, the landing and the rover, and every single step has to go right, says space consultant Laura Forczyk. All those steps must work on the first try, an achievement no other space program me has accomplished on a Mars mission because of the difficulty of landing there.
If all goes well, Tianwen-1 will arrive at Mars in February 2021 and the lander and rover will touch down two or three months later. They will take pictures from the surface, measure the soil composition, make radar observations of the planet's underground structure and observe Mars's magnetic field. Due to the harsh environment on Mars, the rover is expected to last about 90 Martian days. It weighs around 240 kilograms, about the same as China's Yutu-2 rover, which is currently roaming the moon. "The Chinese mission to the far side of the moon has been hugely successful, so they are building on that success now," says Forczyk.
The orbiter, which will relay data from the lander and rover back to scientists on Earth, also carries a suite of scientific instruments. It has two cameras and a spectrometer (光谱仪), which it will use to create a map of the mineral composition of Mars's surface, as well as radar and detectors to examine particles in the Martian atmosphere. It will also look for deposits of water ice that could be helpful for future explorers.
Tianwen-1 won't be alone in Mars orbit. The United Arab Emirates has just launched its first mission to Mars, and NASA's Perseverance rover is set to launch on 30 July. These missions are all leaving now because Mars is at its closest point to Earth, which happens once every two years.
1. Which statement is true according to the first two paragraphs?| A．On 23 July, three countries launched space crafts to Mars. |
| B．Every step of Tianwen mission can be completed at several attempts. |
| C．The mission, Phobos-Grunt, cooperated with Russia was a great success. |
| D．Tianwen mission shows the pioneering efforts of China's space exploration. |
| A．Travelling around. | B．Floating past. | C．Wandering aimlessly. | D．Moving swiftly. |
| A．act as a detector to examine particles on the earth |
| B．search for a substance useful for future exploration |
| C．send information back to the earth collected from Mars |
| D．identify the position of minerals possibly lying on Mars |
| A．China's Successful Space Explorations |
| B．China Launching Missions to Mars |
| C．Tianwen, the First Interplanetary Mission |
| D．Mars, the Hottest Destination to Explore |
9 . An international group of electronic music composers is taking beats from the dance club to jungles and forests and back, all to help save nature's greatest singers. A Guide to the Birdsong of Mexico, Central America and the Caribbean is a new album that includes the sounds of endangered birds. The album will come out next month, whose proceeds will go directly towards efforts to save birds.
The whole project was born out of this idea of trying to combine birdsong, electronic music and conservation. A Guide to the Birdsong of Mexico, Central America and the Caribbean was organized by activist, music producer, Robin Perkins. He invited artists from each of the endangered birds 'homelands to build their own songs around the birds’ songs. There are contributions from ten artists in eight different countries.
First single Black Catbird was created by The Garifuna Collective, from Belize. Al Obando, guitarist and producer of the group, always took in national parks and viewed birds when on the road with the band. “There are no trails, and there are no signs there to tell you about what you reseeing,” Obando says. “So we're trying to do something for the birds and nature tourism.”
Another musician who responded to Robin's call is Tamara Montenegro, an artist from Nicaragua. She was shocked to hear of the serious situation of the Guardabarranco after being approached: “This beautiful creature I grew up adoring also faced the influence of the systematic human activities”. In response, she created a song inspired by this bird and the challenges it faces to live naturally.
The new album is the second edition, following on from A Guide to the Birdsong of South America, produced by Robin in 2015. That first album has raised, to date, over $15,000 benefitting conservation projects in South America. As with the first album, all of the money from the sales of the new album will support specific organizations, including Birds Caribbean.
1. What does the underlined word “proceeds” in Paragraph 1 refer to?| A．Profits. | B．Budgets. | C．Challenges. | D．Effects. |
| A．He created a hit single himself. |
| B．He was fond of observing birds. |
| C．He was the organizer of the new album. |
| D．He did a lot for birds in South America. |
| A．It was friendly to humans. |
| B．It was beautiful in appearance. |
| C．It was losing its living environment. |
| D．It was facing challenges from other birds. |
| A．To collect money for a project. |
| B．To popularize electronic music. |
| C．To recommend some famous artists. |
| D．To introduce a new album of electronic music. |
10 . For one person who passed away, another life supersedes him.
Back in January, Connie Despanic and Benjamin Hall were celebrating the birth of their new born son at the hospital. Though they had agreed on naming him Kingston, they had not yet decided on a middle names. However, they soon found inspiration in an unlikely place; a handwritten letter that was given to them shortly after their son’s birth. The letter read, “To my dad’s angel, even though I will never know your name, you are the first child born here after my dad’s passing. When one life is taken, another is given.”
The letter was written by Jamie Fontenot. Her father James had just passed away in the same hospital. As Jamie was missing her father, a sweet song started to play on the overhead speakers. When she asked nurses about the song, they said that the hospital played the song whenever a baby was born. In her time of heartbreak, Jamie found comfort in the new life that followed her dad’s death, so she wrote the letter and asked the nurses to give it to the baby whose birth caused the music.
Upon reading the note, Connie started to cry. She was full of appreciation for the letter. She and her husband agreed that their son’s middle name should be James. After delivering the note to the baby’s family, the nurses insisted on introducing Jamie to Connie and her new born son. The meeting was an emotional one. And over the course of the last year, the two families have kept in touch and become fast friends.
1. Which of the following can replace the underlined word “supersedes” in paragraph 1?| A．follows | B．overlooks | C．replaces | D．encourages |
| A．She intended to teach the baby a life lesson. |
| B．The father’s death left her cherishing the life. |
| C．The newborn baby made her slightly relieved. |
| D．She was totally moved at the sight of the baby. |
| A．They hurriedly went out to ask for help from Jamie. |
| B．They thanked those nurses for consideration warmly. |
| C．They asked the nurses to arrange a meeting with Jamie. |
| D．They middle-named the baby after Jamie’s father’s name. |
| A．The Tricks of Deciding a Middle Name |
| B．The Difference Between Life and Death |
| C．A Letter Brought Two Families Together |
| D．Two Families Related to a Special Letter |
