1 . The public nowadays has a misunderstanding of forest fires, believing that fires should be kept out of every type of forest. Many of us can recall Smoky the Bear's famous warning: “Remember, only YOU can prevent forest fires”. However, that's not always the case. Under the right conditions, and when conducted safely, fire can create many environmental benefits as well as help prevent larger, uncontrollable wildfires.
After a forest fire, many wildlife species will move into recently burned areas to feed on these newly available foods. Some reptiles and amphibians such as the pine (松树） snake prefer forests frequently burned by fire. As Herbert Stoddard put it, “One of the most harmful things modern man has done to birds has been his attempt to exclude fire from fire-type pine forests. Within a few years most forests choke up with bushes, lose their prairie-like vegetation (草原般植被） and can no longer support birds dependent on periodic burning for their food supply and proper cover.”
If you are asked to picture the forest floor, what do you see? Pine needles, cones, leaves, branches might come to mind-all sources of fuel. If these fuel sources build up without any type of removal, the 'fuel load' can lead to fires catastrophic to forests and people alike. In contrast, prescribed fire can be used by forest professionals every couple of years to keep forest fuels at an appropriate and manageable level. They can also minimize the spread of pest insects and disease and remove unwanted tree and plant species. Plus, they can create and maintain important wildlife habitats rich in grasses and promote the growth of trees, wildflowers and other various plants.
Many organizations and agencies work to promote fire on the landscape when and where appropriate. Smokey Bear even has an updated warning: “Only You can Prevent Wildfires,” as the Forest Service has over the last few decades developed policies and procedures to include prescribed fire as a management tool, as well as continuing their work to prevent and fight wildfires.
1. Why did the author mention Smoky the Bear's warning?| A．To introduce the topic of the passage. |
| B．To clarify a misunderstood concept. |
| C．To show the significance of fire prevention. |
| D．To raise people's awareness of forest protection. |
| A．Forest bushes. |
| B．Fuel sources. |
| C．Pine forests. |
| D．Periodic burning. |
| A．To put out wildfires. |
| B．To keep the forest balance. |
| C．To remove tree and plant species. |
| D．To keep the fuel rich in the forest. |
| A．One Match Can Start A Forest Fire |
| B．Where There Is Smoke There Is A Fire |
| C．Not All Forest Fires Are Created Equal |
| D．Why Not Keep The Forest Fire Burning |
2 . Until now, scientists haven’t been able to study the new rock on the moon.The new samples from Chang’e 5 will change this. They’re from near Mons Rümker, a volcanic mountain where the rock is thought to be much younger-- about 1 billion years old.
There are a lot of reasons scientists are eager to study this younger rock, one of which is that it could help us more precisely date not only the moon, but many rocky planets and other objects.
Here’s how that works: Scientists date lunar rock by using something called a chronology curve（年代学曲线）, says Jollliff, a scientists at Washington University in St. Louis. Basically, they estimate the age of the rock by counting the number of craters（火山口） in the area the rock comes from; those increase as objects strike the rock over time. To make this estimation, scientists need to match the number of craters to a precise age. Right now, they only have data points for lunar rock that is 3 to billion years old. Modern techniques can date the new sample extremely accurately, and once scientists know its precise age, they can add a valuable data point to their chronology curve. The dating system will also help us more accurately estimate the age of all sorts of objects in space, like rocky planets and other moons.
Another reason scientists are keen to study this young volcanic rock is to find out more about how volcanism works on the moon. Jollliff says that it’s unclear why there was volcanic activity on the moon for such a long period of time. Most of the moon; s volcanic activity, he says, is thought to have occurred 3 or 4 billion years ago, when the moon was still pretty young. But since the moon does not have plate structure, which drives volcanism on Earth, it’s unclear what could have caused much later volcanic activity. “That’s something that you can find out of the samples by studying them in the lab,” Jollliff says.
1. What does the underlined word “this” in paragraph 1 refer to?| A．The fact of being unable to study the new rock. |
| B．The new rock from near Mons Rümker. |
| C．One of the reasons to study the moon;s new rock. |
| D．The study of the moon’s younger rock. |
| A．ensure there was volcanic activity on the moon. |
| B．more precisely date only the moon. |
| C．date lunar rock by using a chronology curve. |
| D．explore how volcanism works on the moon. |
| A．Scientistsare keen to study this young volcanic rock. |
| B．Scientists can’t know why volcanic activity exists on the moon. |
| C．The moon’s volcanic activity occurred 3 or 4 billion years ago. |
| D．It’s clear what could have caused much later volcanic activity. |
| A．How scientists study the younger rock. |
| B．Why the research is important. |
| C．Why the younger rock is worth studying. |
| D．What scientists do to study the younger rock. |
3 . Ian McKenna was in third grade when he learned that many kids at his Austin school weren't getting enough to eat at home. He wanted to help, but local volunteer organizations turned him away, saying he was too young. So he decided to find his own solution. For years, he had been gardening with his mother, and they often distributed their extra vegetables to the neighbors. “Why not give the produce to a soup kitchen? Then I thought, I'm good at gardening," says McKenna, now 16. “Why not plant a garden at school, so that kids in need could take food home?"
McKenna persuaded his school to set aside space for a garden; then he asked the community for donations of seeds and equipment. Other students donated their time. Within months, McKenna's garden was producing lettuces, tomatoes, cucumbers and squash for students and their families. Now, seven years later, McKenna's Giving Garden project has expanded to five area schools in addition to his own backyard garden, and he has provided organic produce, enough for 25,000 meals, to Austin families.
For most of his gardening activities, McKenna wears the same T-shirt in different colors, with his personal motto on it: BE A GOOD HUMAN. To him, that means helping in any way you can, no matter what your age. "Even a smile might change someone's life," he says. “It lets them know that they are important. It can make their day."
When COVID-19 hit the U.S., McKenna redoubled his efforts, cooking up to 100 meals to distribute to the hungry on the weekends. When social distancing meant that volunteers couldn't work on community garden plots, he started offering online classes and a gardening hotline so families could grow at home. While gardening is his core focus, McKenna says he is always looking for new ways to help the hungry.
1. What caused Ian's decision to help the kids in his own way?| A．Being rejected by volunteer groups. | B．Being good at gardening. |
| C．A soup kitchen's support. | D．His mother's suggestions. |
| A．It helps students only. | B．It was started with joint efforts. |
| C．It is funded by schools. | D．It earns great profits every year. |
| A．Where there is a will, there is a way. | B．A small gesture makes a difference. |
| C．One good turn deserves another. | D．Love can break all the barriers. |
| A．Ian McKenna, Growing a Food Bank |
| B．Ian Mckenna, an Experienced Gardener |
| C．Giving Garden Project, an Impossible Mission |
| D．Giving Garden Project, a Universal Solution |
4 . I believe in the power of science fiction, not just for its capacity to turn dreams into reality, but also for its power to bond together those who share a common view of the future. For me, that’s true for my relationship with my dad. Some fathers and sons bond over sports, fishing or hunting, but my dad and I bond over Star Trek. We tried a trip to Disney World, but one of my earliest memories wasn’t Mickey, but a Klingon battle cruiser on the screen.
Over the years, nearly every setting and situation has become far away for my dad and me. When it’s warm at night, we’re not driving along some dark streets in Indiana, but going at a slow speed with stars dimly shining. Both of us are thinking of them, without needing to say a word. All these imaginations of other universes have together created a private universe for my dad and me.
Gene Roddenberry, creator of Star Trek, once said, “Science fiction is a way of thinking, a way of logic that bypasses a lot of nonsense. It allows people to look directly at important subjects.” A lifetime of science fiction has influenced more than just my relationship with my dad, but has also helped me shape my own hopes for the future. I’m now a science writer.
Yes, science fiction has made me into a “nerd” and it also has been a source of joy for my family, making me an optimist while enabling me to think critically about the danger of technology. Thank those authors who have shared their visions: the world and my family are better for it. Thank my dad, who is both the best storyteller and the best man I have ever known because he helped me realize the truth of Tennyson’s words, “For I dipped into the future, far as human eye could see, saw the vision of the world, and all the wonder that would be.”
1. What contributes to the bond between the author and his father?| A．Their similar dream. | B．Their love for each other. |
| C．Their common interest. | D．Their hobby of fishing. |
| A．His deep impression of his dad. | B．His feeling of staying with his dad. |
| C．His earliest memory of his dad. | D．His good relationship with his dad. |
| A．It leads him to pursue a desirable career. | B．It brings him the courage to live better. |
| C．It inspires him to face the danger of technology. | D．It makes him a source of his family’s joy. |
| A．The Wonders Science Brings | B．The Power of Science Fiction |
| C．The Stories About Science Fiction | D．The Time Together with My Father |
5 . Much meaning can be conveyed, clearly, with our eyes, so it is often said that eyes can speak.
Do you have such kind of experience? In a bus you may look at a stranger, but not too long. And if he is sensing that he is being stared at, he may feel uncomfortable.
The same in daily life. If you are looked at for more than necessary, you will look at yourself up and down, to see if there is anything wrong with you. If nothing goes wrong, you will feel angry toward others’ stare at you that way. Eyes do speak, right?
Looking too long at someone may seem to be rude and aggressive. But things are different when it comes to stare at the opposite sex. If a man glances at a woman for more than 10 seconds and refuses to move his gaze, his intentions are obvious, that is, he wishes to attract her attention, to make her understand that he is admiring her.
However, the normal eye contact for two people engaged in conversation is that the speaker will only look at the listener from time to time, in order to make sure that the listener does pay attention to what the former is speaking, to tell him that he is attentive.
If a speaker looks at you continuously when speaking, as if he tries to dominate you, you will feel uncomfortable. A poor liar usually exposes himself by looking too long at the victim, since he believes in the false idea that to look straight in the eye is a sign of honest communication. Quite the contrary.
In fact, continuous eye contact is confined to lovers only, who will enjoy looking at each other tenderly for a long time, to show affection that words cannot express.
Evidently，eye contact should be done according to the relationship between two people and the specific situation.
1. If two persons exchange eye contact gently for long, what is probably their relationship?| A．Boss and employee. | B．Lovers. |
| C．Teacher and student. | D．Strangers. |
| A．To the opposite sex, stare at him or her. |
| B．To a stranger, avoid looking at him or her. |
| C．In a conversation, look at the listener all the time. |
| D．Make eye contact depending on the relationship and different situations. |
| A．Don’t stare at others. | B．Body language is important. |
| C．Eyes can speak. | D．Eye contact benefits you. |
6 . My challenge for you is this: to read a book for 15 minutes very single day for a month.
Let me explain a bit, by telling you where the challenge came from. I have many things in common with my dad, like music taste and sense of humor, but sadly reading isn’t one of them. I can happily spend a whole day with a book, but my dad can’t read a book for longer than about 5 minutes. He reads emails, websites and papers for work, but not books. He's busy, so I think siting down to read for just 15 minutes a day is a good way to relax and to introduce him to reading. My dad is by no means the only person who avoids books. I know lots of people would rather relax on their computers or in front of the TV. Everyone is different and has their own interests, but I think there’re lots of benefits of reading, which screen-based activities don’t have.
Firstly, it’s better of your eyes. Looking at screens can be very stressful for your eye muscles, and clearly you should avoid looking at screens for an hour before bed, to get a good night’s sleep.
I personally love reading in that I can be transported to another world—I often forget the time or things around me! Reading is a great way to switch off before you go to bed, because you think more about the world of the book, rather than the real world, so you can truly relax. I know you can be transported to a different world in a film or a TV show, but I think books do it better.
I also enjoy hearing what people are doing and finding out what they think. Reading gives me the chance to get to know hundreds of new people! It also teaches you to see things from other people's points of view, and understand other people's decisions or opinions. With a book, you can hear everything a character is thinking or feeling—you really can be inside someone else’s head!
So give it a go! Take 15 minutes when you're waking up, going to bed, eating lunch, or having a coffee. If you read a lot, why not try 15 minutes of an English book, or pass the challenge on to someone else? Good luck, and happy reading!
1. The author mentions his father in the text to show _______.| A．reading is important | B．his father is very busy |
| C．his father likes reading | D．many people have no habit of reading |
| A．Knowledge from books. | B．Some scientific experiments. |
| C．The authors personal experience. | D．The author's father's personal advice. |
| A．Helping readers sleep well. | B．Making readers feel relaxed. |
| C．Reminding readers of the real world. | D．Transporting readers to a different world. |
| A．Doubtful. | B．Objective. | C． Supportive. | D．Disapproving. |
| A．15-minute Reading Challenge. | B．Tips for Reading English Books. |
| C．The ways to Improve Reading Skills. | D．Having a Coffee While You Read. |
7 . The COVID -19 pandemic has changed life as we knew it just a few weeks ago. Millions of people worldwide are now under required or voluntary lockdowns. All public attractions, including museums and aquariums, are closed, and the usually crowded streets of popular tourist destinations are empty. An unexpected silver lining during these challenging times for humans is that many animals are finally getting a chance to leave their normal habitats and move about freely.
The first animals to take advantage of human absence were Annie and Edward, two penguins who live at Chicago’s Shedd Aquarium. A video released on March 15, 2020, showed the couple eagerly duckwalking around, exploring the aquarium's various exhibits. The video, which instantly became popular, inspired other institutions to share short videos of their four-legged creatures playing as well.
The Cincinnati Zoo in Ohio joined the fun trend on March 16, 2020，with a “Home Safari” live-stream series-the first staring its adorable baby panda，Fiona. “Let us help make your children's hiatus from school fun and educational,” zoo officials announced. “Join us for a Home Safari Online Live each weekday at 3 pm，where we will highlight one of our amazing animals and include an activity you can do from home.
Meanwhile，the San Diego Safari Park has kept their webcams（网络摄像头）rolling，allowing fans to enjoy lovable animals without leaving home. Animals in the wild are also lively as humans stay indoors. The absence of cruise ships is bringing large numbers of dolphins to a port in Cagliari，while groups of wild turkeys are happily walking on the streets of Oakland.
Though the animals indeed appear to be having a good time，the heartwarming videos and images shared on social media, are also bringing much -needed cheer to millions of humans worldwide. Stay strong and healthy! We are all in this together!
1. What changes has the COVID-19 pandemic caused to the zoo animals?| A．They are now under required or voluntary lockdowns. |
| B．They can enjoy a free life without tourists' disturbance. |
| C．They will be faced with unexpected existing challenges. |
| D．They get a chance to wander about freely in the wild. |
| A．Courses. | B．Sightseeing. | C．Activities. | D．Interruption. |
| A．To enable people to admire animals at home. |
| B．To film the animals wandering about in the zoo. |
| C．To compete for more viewers online. |
| D．To record people's life in the COVID-19 crisis. |
| A．The Pandemic Affects the World |
| B．Lovely Animals Bring fun to People |
| C．Animals Play in the Absence of Humans |
| D．Stay Strong and Healthy in the Pandemic |
8 . The idea of using a public bathroom with see through walls may sound like the stuff of nightmares. But a famous Japanese is hoping to change that view, using new technology to make restrooms in Tokyo parks more inviting.
“There are two things we worry about when entering a public restroom, especially those cated at a park,” according to architect Shigeru Ban’s firm. “The first is cleanliness, and the second is whether anyone is inside.”
The newly-invented transparent walls can turn off both of those worries, Ban says, by showing people what awaits them inside. After users enter the restroom and lock the door, the room’s walls turn a powdery paste) shade and are no longer see-through.
Ban’s are sure to make for great conversation among visitors to the park-and they’ll stand out even more after dark. “At night, the facility lights up the park like a beautiful lantern,” the architect’s website says.
The group is behind the Tokyo Toilet project, world-famous architects to create toilets “like you’ve never seen. The project’s eye catching toilets are part of a plan to put people ar ease when isiting a public bathroom. The project may seem silly, but the 16 architects who are reimagining public toilets are some of the brightest names in Japanese architecture. The list includes four Pritzker Prize winners-Ban, Toyo Ito, Tadao Ando and Fumihiko Maki-along with international stars such as Kengo Kuma and Sou Fujimoto. The fashion designer Nigo is also contributing.
Ban’s colorful public bathrooms opened to the public this month in two parks: Yoyogi Fukamachi Mini Park and Haru-no-Ogawa Community Park. Other bespoke commodes will be opening in coming months.
1. Why are people often worried before entering a public restroom?| A．Its lock is usually useless. |
| B．It’s usually at a huge distance. |
| C．It’s not always clean. |
| D．It’s always occupied. |
| A．Easy to see through. |
| B．Not easy to see through. |
| C．Full of bright colors. |
| D．Thick and strong. |
| A．It’s and silly. |
| B．It’s rewarding and. |
| C．It has won the Pritzker Prize. |
| D．It’s the fruit of colleqtive wisdom |
| A．Should the public restrooms be upgraded? |
| B．The new high-tech walls of public restrooms are coming. |
| C．How do we live with see-through public facilities? |
| D．Some famous architects designed a silly project. |
9 . People who have kids live longer than those who remain childless, an academic study has suggested. Researchers believe it is because adults’ immune systems are “refreshed” when kids go to nursery and start picking up infections.
During the course of someone’s life, their immune system can become weaker. But when kids start bringing infections home, their parents’ immune systems get a workout. Non-parents — unless they are teachers or nurses perhaps — do not get the same exposure to infection.
Writing in the journal Scientific Reports, Miguel Portela said parents had less risk of dying from infection than non-parents and if they did, it was about five years later. He said that “a parent’s immune system is refreshed by a child’s infections at a time when their own protection starts wearing thin.” He added, “With this improved immune system, the parent has a better chance to defend whatever infections that might strike when old and weak and parenthood is rewarded in individual terms through an improved immunization against infections.” Naturally there are other reasons why some people live longer than others, but they may not be comparable with becoming a parent. The academics say that high income and house ownership are always associated with higher survival but less so than having children.
Mr. Portela admits the research is far from complete, saying that while the results “record a relationship between the presence of children and death rate, the specific transmission mechanisms remain unclear. He acknowledges the presence of other, perhaps behavioral factors in parents which result in changed death rate compared to individuals without children.” He adds, “While the relationships of lifestyle choices such as smoking, obesity, drinking and other behavioral factors with life expectancy and causes of death are well studied and understood, the same cannot be said for the individual decision to become a parent”.
1. Why did Mr. Portela say “parents had less risk of dying from infection than non-parents”?| A．Parents have healthier lifestyles. |
| B．Parents have less exposure to infection. |
| C．Parents have higher ability to fight against infections. |
| D．Parents have less experience to fight against infections. |
| A．By being exposed to their kids’ infection. | B．By working out with their kids. |
| C．By refreshing their kids’ life. | D．By strengthening their kids’ infection. |
| A．Rich life benefits parents more than having children. |
| B．Lack of sleep has nothing to do with life expectancy. |
| C．The presence of children can improve parents’ health |
| D．Behavioral factors contribute to higher death rate than having no children. |
| A．Parents and Non-parents | B．How to Achieve Longer Life Expectancy? |
| C．How Is Parents’ Immune Systems Changed? | D．Children’s Effect on Parents’ Immune System |
10 . During a decline in tourism, one national park in Thailand has seen a dramatic rise in “visitors” recently. So many are the hermit crabs （寄居蟹）flooding into the otherwise empty beaches of Koh Lanta that shells （贝壳）for them to live in have become in short supply.
The Thai government moved quickly to ease the housing shortage, launching a public appeal for empty shells that netted over 200 kg. On December 5 these were distributed around the park in a ceremony.
Hermit crabs rely on shells to protect their soft bodies, moving to larger shells as they grow. On Koh Lanta and the surrounding smaller islands, their rapid increase seems to be a natural phenomenon, rather than directly related to the absence of tourists. But the shortage of shells may be man-made：pretty ones have long been gathered to be sold as goods. Crabs had begun to make do with potential death-traps such as plastic caps and bottles.
The shell drive was part of a government initiative to “regain the balance of nature”. “I have instructed all national parks to do whatever it takes,” says Varawut Silpa-archa, the minister for natural resources. His inspiration comes from the pause in tourism brought on by CO VID-19. A ban on international visitors and the closure of national parks have helped nature recover, bringing endangered leatherback turtles back onto Thai beaches. In the coastal provinces of Phang Nga and Phuket, turtles have laid the largest number of eggs for 20 years.
The government has decided to try to copy the short break forced on it by CO VID-19 in future. From now on, all national parks will be required to close for a short period during the off-season and to limit the number of tourists through a reservation system when they are open. Although such restrictions mean reduced earnings from tourism in the short term, in the longer run more parks may help to keep the tourists coming.
1. What happened to the beaches of Koh Lanta recently?| A．They got flooded by seawater. |
| B．They became completely empty. |
| C．They were packed with hermit crabs. |
| D．They saw a constant stream of tourists. |
| A．Natural disasters. |
| B．Human activities. |
| C．Their preference for bottles. |
| D．The government's involvement. |
| A．To warn turtles are dying out. |
| B．To prove beaches are their ideal habitats. |
| C．To stress ecological diversity of Thailand. |
| D．To illustrate the birth of Varawut’s inspiration. |
| A．Developing Economy or Protecting Animals? |
| B．Closing National Parks or Drawing More Visitors? |
| C．Governments are Responsible for the Balance of Nature |
| D．Authorities Help to Find Shelters for Homeless Hermit Crabs |
