1 . Human activity is changing the surface and temperature of the planet. But new research shows it is also changing the sound of the Earth’s oceans and seas.
Scientists say the changes in the sounds of our oceans and seas affect many marine(海洋) animals—from very small fish to huge whales. Sound travels “very far underwater,” Francis Juanes told the reporter. Juanes is an ecologist at the University of Victoria and co-writer of the recent research published in a magazine. “For fish,” he explained, “sound is probably a better way to sense their environment than light.”
Sounds help fish and other marine animals survive. They use sounds to communicate with each other. Sounds also help some ocean animals find food and avoid their hunters. Many ocean animals use sounds to find good places to give birth. However, increased noise from humans is making it harder for these animals to hear each other. The noise comes from shipping traffic, underwater oil and gas exploration, offshore construction, and other noisy human activity.
“For many marine species, their attempts to communicate are being masked by sounds that humans have produced,” said Duarte. The marine ecologist at the Red Sea Research Center co-wrote the paper with Juanes. The Red Sea, Duarte said, is one of the world’s most important shipping passages. It is full of large ships traveling to Asia, Europe, and Africa. Some fish and other animals, he said, now avoid the noisiest areas. Also, the overall number of marine animals has gone down by about half since 1970. In some parts of the ocean, scientists now record “fewer animals singing and calling than in the past—those voices are gone,” said Duarte.
Juanes and Duarte examined studies and research articles about changes in noise volume(音量) and frequency in the world’s oceans. Then they put together a detailed picture of how the ocean soundscape is changing and how marine life is affected.
Climate change, the researchers found, also affects physical processes that shape ocean sounds. These include such things as wind, waves, and melting ice.
Some studies suggest that noise may cause hearing loss of marine animals. Besides, many marine animals are showing higher levels of stress due to noise, which might also affect the immune(免疫) system.
Scientist Juanes says sound pollution may be easier to deal with than other ocean threats. “In theory,” he said, “you can turn down or turn off the sound immediately. It’s not like plastics or climate change, which are much harder to undo.”
1. What can we learn from the passage?| A．Sound noise may result in hearing loss of human beings. |
| B．Sound pollution killed most of the marine animals in the Red Sea. |
| C．Sound noise can influence the communication of marine animals. |
| D．Sound is unlikely to be a better way to sense their environment than light. |
| A．Channel. | B．Address. |
| C．Industry | D．Company. |
| A．what is the main cause of climate change |
| B．what should be done to reduce sound pollution |
| C．how to record changes in noise volume and frequency |
| D．how to enhance the immune system of marine animals |
| A．The Future of Oceans Exploration |
| B．The Changes in the Sounds of Oceans |
| C．Sounds Help Marine Animals Survive |
| D．Humans are Making Oceans Too noisy |
2 . It might seem strange to be making predictions about 2021, but one thing is clear: technology has been affected just as much as every other part of our lives. Another clear thing is that today’s most important technology trends will play a big part in helping us deal with and adapt to the many challenges facing us. From the shift to working from home to new rules about how we meet and interact in public spaces, technology trends will be the driving force in managing the change.
One of the major technology trends that are likely to play out this year is 5G and enhanced connectivity. Each successive advance in mobile connectivity from 3G onwards has unlocked new use cases for the Internet. 3G made web browsing and data-driven services useful on mobile devices, 4G led to the growth of streaming video and music platforms as bandwidths (宽带) increased, and 5G, similarly, will open more doors in terms of what is possible.
5G means that services relying on advanced technologies such as augmented (增强的) reality and virtual reality, as well as cloud-based gaming platforms like Google’s Stadia, become a practical thing, anywhere at any time. They also threaten to make cable and fiber-based (光纤) networks redundant, with their need for us to be tied to a particular location.
In short, 5G and other advanced, high-speed networks make other new technologies available anywhere, any time. A great example is Norwegian fishery operator Salmar that uses a 5G network to automate the care and feeding of its fish. Image recognition algorithms (算法) are used to detect which fish are over or under-feeding, and automatically distribute food and medicine needed to keep them healthy. Initiatives like this will become increasingly important during 2021, where businesses look to increase automation across their workforces.
1. Which of the following is highly influenced by 5G technology?| A．Data-driven services. | B．Streaming video. |
| C．Music platforms. | D．Google’s Stadia. |
| A．Useful. | B．Unnecessary. | C．Expensive. | D．Special. |
| A．To show the development of Norwegian fishery. |
| B．To explain how to keep fish healthy. |
| C．To present the application of 5G technology. |
| D．To propose new initiatives for businesses. |
| A．Different predictions of technology trends. |
| B．Successive advances in mobile technology. |
| C．One of the technological highlights of the year. |
| D．The driving force in managing changes. |
3 . My work started in 2003 at my local animal shelter’s Adoption Department. It seems like such a long time ago. In the 13 years that have passed, more than 50,000 animals have passed the doors of the shelter. Most of them, I do not remember. But occasionally there are animals who stand out. Tabby was one such animal.
Tabby was one of the many homeless dogs. What’s more, she was blind and deaf. Tabby’s chances at adoption seemed remote at best. But one day a woman named Loretta came to the shelter. Her son, Gary, who suffered from epilepsy (癫痫) had seen Tabby’s picture on the shelter’s website. They were interested in meeting her! Most boys would want a puppy, a dog who could grow with him and run through grassy fields on summer days. Tabby would never be able to do that. But as they say, "love is blind". After meeting her, they decided to adopt Tabby!
If Tabby’s story had simply ended with her successful adoption, it would still have been something very special indeed but it was what happened after her adoption that some might label as "magical" or perhaps even miraculous. As Gary and Tabby did everything together, they became so "in tune" with one another that Tabby began to telegraph Gary’s seizures (疾病发作) before they occurred, giving his family a warning that one was about to strike. What’s more, Gary seemed to be having fewer and fewer seizures since Tabby’s arrival.
How could it be? There are some things that happen in this world that challenge all logic and understanding. Sometimes, the best that we can do is to accept a miraculous thing, which we didn’t attempt to explain. Because when you try to explain it, you lose the beauty and wonder of it all.
1. Which sentence can be used to describe Tabby?| A．She was so lovely that she could be easily adopted. |
| B．She suffered a lot from the disease-epilepsy. |
| C．She was so strong that she could run very fast. |
| D．She was homeless and couldn’t see or hear. |
| A．Amazing. | B．Typical. | C．Interesting. | D．Special. |
| A．Gary learnt about Tabby from a magazine. |
| B．Gary was cured in the company of Tabby. |
| C．Tabby could indicate a seizure before it struck. |
| D．Most boys would have the same decision as Gary. |
| A．Love is Blind: a Miraculous Dog | B．Give Me Food: My Dear Master |
| C．Love is Everywhere: a Poor Dog | D．Take Me Home: My Dear Boy |
4 . 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 |
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 . Yet although officers will not disappear, it’s hard to imagine that working life will return to before-COVID-19 (新冠肺炎) ways. For more than a century workers have pushed themselves on-to crowded trains and buses, or suffered traffic jams, to get into the office, and back, five days a week. However, for the past one year they have not had to commute (上下班往返), and may enjoy it for a long time.
Employers, for their part, have supported expensive offices in city centers because they need to gather workers in one place. The rent is only part of the cost; there are cleaning, lightning, printers, catering and security on top. Needless to say, in the homeworking era these costs are cut down.
Another part of the homeworking era may be the disappearance of the five-day working week. Even before the COVID-19 many workers became used to taking phone calls or answering emails at the weekend. In the homeworking era, the dividing line between home and working life, a useful way of relieving stress, will be even harder to keep. It may be lost altogether.
What’s more, without the Monday-to-Friday commute, the weekend seems more nebulous, for employees may walk and take breaks freely, with only the company video calls unchanged.
Looking further out, the homeworking era may bring other changes. Some may decide to live in small towns where housing costs are lower, since they have no need to commute. Men will have fewer excuses to skip cleaning or childcare if they are not disappearing to the office.
In a sense, this is a return to normal: until the 19th century most people worked at or close to their homes. But social historians may still regard 2020 as the start of a new age.
1. Which one is the change of the working life after the COVID-19?| A．Living in big cities. | B．More traffic jams. |
| C．Reduced working cost. | D．Less phone calls at the weekend. |
| A．Important. | B．Unclear. | C．Fruitful. | D．Annoying. |
| A．Doubtful. | B．Objective. | C．Supportive. | D．Negative. |
| A．2020: the Start of a New Age? |
| B．Working at Home: Are You Ready? |
| C．Who is the Winner: Employer or Employee? |
| D．Home and Working Life: How to Keep Balanced? |
8 . Standing on the ruins（废墟）after the fire where his house had been, Peter Ruprecht admitted that he was not sure how or when to rebuild. He was still shocked by what Australia's increasingly changeable climate had already delivered: first a drought, then a destructive bush fire, then a foot of rain from a storm.
"It's unstoppable," said Mr. Ruprecht, a former dairy farmer. "We speak about the warmth of Mother Nature, but nature can also be vicious and wild and unforgiving."
Australia's' hellish（地狱的）fire season has eased（缓和）, but its people are facing more than a single disaster. With floods destroying homes not far from where fires recently spread, they are facing a cycle of what scientists call "compound extremes": one climate disaster strengthening the next.
Warmer temperatures do more than just dry out the land. They also heat up the atmosphere, which means clouds hold more moisture（水汽）for longer periods of time. So droughts get worse, giving way to fires, then to heavy rains that the land is too dry to absorb.
Many Australians in disaster zones complain that their government, after ignoring climate change for years, has not yet to draw up recovery plans that are clear and that take future threats into account.
At the same time, the economic costs of a changing climate are rising quickly. Philip Lowe, the governor of the Reserve Bank of Australia, warned recently that Australia was already paying a price, and that it would only go up.
1. Why Peter Ruprecht is mentioned in the beginning?| A．To arouse readers' pity. | B．To introduce the topic. |
| C．To stress the problem. | D．To call on readers to help. |
| A．grateful | B．advanced | C．responsible | D．forcible |
| A．Government inaction. | B．Warmer temperature. |
| C．The lack of money. | D．No recovery plans. |
| A．guidebook. | B．A travel journal. | C．A news report. | D．A book review. |
9 . A group of swans (天鹅) flew down to a beach where a crow (乌鸦) was jumping around. The crow watched them with disdain (鄙视).
“You have no flying skills at all!” he said to the swans. “All you can do is to move your wings. Can you turn over in the air? No, that’s beyond you. Let’s have a flying competition. I’ll show you what real flying is!”
One of the swans, a strong young male, took up the challenge. The crow flew up and began to show his skills. He flew in circles, performed other flying tricks, and then came down and looked proudly at the swan.
Now it was the swan’s turn. He flew up, and he began flying over the sea. The crow flew after him, making all kinds of comments about his flying. They flew on and on till they couldn’t see the land and there was nothing but water on all sides. The crow was making fewer and fewer comments. He was now so exhausted that he found it hard to stay in the air, and had to struggle to keep himself from falling into the water.
The swan pretended not to notice, and said, “Why do you keep touching the water, brother? Is that another trick?”
“No,” said the crow. He knew that he had lost the competition. “I’m in trouble because of my pride! If you don’t help me, I’ll lose my life…”
The swan took pity on him, and took him on his shoulders and flew back to the beach.
1. What does the underlined word “exhausted” in Paragraph 4 mean?| A．Tired. | B．Angry. |
| C．Frightened. | D．Regretful. |
| A．It was showing another flying skill. |
| B．It was struggling to keep itself from falling into the water. |
| C．It was thirsty and wanted to drink some water. |
| D．It was enjoying itself by doing so. |
| A．The crow didn’t know flying. |
| B．Flying skills were useless. |
| C．The swan saved the crow because they were good friends. |
| D．The swan was better at long-distance flying than the crow |
| A．No pains, no gains. | B．The early bird catches the worm (虫子). |
| C．Pride goes before a fall. | D．Practice makes perfect. |
10 . In honor of National Writing Day in the UK, actor Benedict Cumberbatch sat down at a desk and with the wisdom of his 39 years, he penned a letter to Santa Claus. You can read the letter in full—including the one gift the actor still really wants—below.
"Dear Father Christmas,
Like most adults I feel embarrassed asking anything of you because our time with you is surely gone. Now we get our own presents, take responsibility for our own actions, and live in the world we have created. So it's not for us to turn around and ask for your help with the environment, education, food banks, human rights and wars. Though we need all the help we can get with all these man-made problems.
And it's not that you're not kind-hearted. You're great because you are for the children who need some magic in a world where playful imagination and innocence(纯真)are decreasing.
This is what I'd like to ask you to help with. A little more time for children to be children. Lengthening the moment of magic and playfulness. Keep them away from the realities of a world that's gone mad, especially those suffering illness or hunger or shaking with fear or cold because of environmental disasters or wars. Please help to light up their worlds with a moment of joy and hope.
You do inspire wonder among those who write you letters and go to sleep hoping there might be a new object in their possession coming down. You inspire good behavior.
I feel a little sorry. And I guess I've done exactly what I said I wouldn't... Asked you to help with adult problems and solve some of the greatest worries we have for our children. I promise to leave some delicious pies for you!"
1. Cumberbatch wrote this letter to ________.| A．Inspire children to take up writing. |
| B．Seek help from Father Christmas. |
| C．Show his belief in Father Christmas. |
| D．Look back upon his happy childhood. |
| A．Shortening | B．Reducing |
| C．Increasing | D．Doubling |
| A．Children are full of imagination. |
| B．Everyone has the right to get a gift. |
| C．Father Christmas doesn't exist on earth. |
| D．Cumberbatch is concerned about children. |
