1 . One of the three astronauts who made up the historic Apollo 11 crew, NASA veteran Michael Collins passed away today, April 28, 2021, at the age of 90.
Collins was born on Oet. 31, 1930, in Rome, Italy. His father, a career officer in the US, Amy who’d go on to retire as a major general, was stationed there at the time. After his family returned stateside, Collins earned a Bachelor of Science degree from the US. Military Academy at West Point, graduating with the class of 1952. He then became an Air Force test pilot, which opened some interesting doors. In 1962, John Glenn became the first American to orbit the Earth. Glenn’s achievement was an inspiration for Collins. “I certainly had no childhood dream of flying to the moon or anywhere else, but the idea was extremely appealing.” Collins wrote in his autobiography Carrying the Fire: An Astronaut’s Journeys. He was selected to join NASA’s third class of astronauts the following year. His first extraterrestrial (地球外的) adventure came in 1966, when Collins set about on a three-day spaceflight with fellow astronaut John Young. Known as Gemini X, their mission was one for the record books; the two men reached the then-unprecedented (前所未有的) altitude of 475 miles (764kilometers ).
Of course, Michael Collins is best remembered for his role in Apollo 11. On July 16, 1969, at 8:32 AM ( Eastern Standard Time ), Collins, Buzz Aldrin and Neil Armstrong were launched out of the Kennedy Space Center in Florida. They were the three explorers NASA had chosen for the first mission that would ever put a man on the moon. Four days into their adventure, on July 20, Collins parted ways with his crewmates. Seated in the Eagle landing craft, Armstrong and Aldrin made their landing onto the lunar surface. An American flag was planted; photos were taken; Armstrong said the immortal words, “ One small step for man, one giant leap for mankind. ”
Meanwhile, Collins stayed behind in the crew’s command module (舱), orbiting the moon as his colleagues explored it.
1. What motivated Collins to dream of flying to the moon?| A．His father’s encouragement. | B．John Glenn’s achievement. |
| C．His childhood experiences. | D．His favorite book. |
| A．He became the first American to orbit Earth. |
| B．He dreamed of flying to the moon in his childhood. |
| C．His first space exploration was accomplished by himself. |
| D．He once wrote an autobiography. |
| A．He was praised by Armstrong. | B．He became an Air Force test pilot. |
| C．He participated in the work of Apollo 11. | D．He reached the then-unprecedented altitude of 475 miles. |
| A．Ambitious. | B．Lucky. | C．Warmhearted. | D．Humorous. |
2 . For centuries people have wondered who was the model for Leonard do da Vinci’s Mona Lisa and what was the reason for her smile. But the Mona Lisa is just one of the many mysteries in the art world. Here are some other notable unsolved art mysteries that might be a little less familiar.
Mystery 1: Who Is the girl in Johannes Vermeer’s Girl with a Pearl Earring?
Around 1665, Dutch artist Johannes Vermeer painted a charming portrait of a young girl. People around the globe have long wondered who this fetching young lady was. Many say she must have been Vermeer’s daughter or girlfriend. Others think she wasn’t a real person, but rather an intentionally mysterious, timeless figure. The painting, referred to as the “ Mona Lisa of the North ” , has been part of The Hague’s permanent collection since 1903. But it draws record-breaking crowds whenever and wherever it tours around the world.
Mystery 2: Where Is Raphael’s Portrait of a Young Man?
Portrait of a Young Man is considered one of the most important pieces of art to go missing during World War II. The painting was created around 1513 by Raphael, a famous Italian Renaissance artist, and stolen from Poland’s Princes Czartoryski Museum in 1939.
The portrait had traveled to Germany and Austria before it was gone in 1945.
Mystery 3: Was Van Gogh Murdered?
One of the main things people know about Vincent van Gogh is that he cut off his ear. That was likely because the Dutch post-impressionist painter suffered from mental illness, probably severe depression. The official cause is suicide from a gun shot at close range.
That certainly seems plausible (貌似有理的), given his poor mental health. However, no gun was found near his body, and locals reported two teenage boys bullying him shortly before his death.
1. What do Portrait of a Young Man and Girl with a Pearl Earring have in common?| A．They are both gone. | B．They are both portraits. |
| C．They were created at the same period. | D．They are both related to World War II. |
| A．Leonardo da Vinci. | B．Johannes Vermeer. | C．Vincent van Gogh. | D．Raphael. |
| A．Art lovers. | B．Book reviewers. | C．Tour guides. | D．Music composers. |
3 . The Science and Technology Facilities Council (STFC) and University of Central Lanca-shire (UCLan) share findings of a project to improve student engagement with science, technology, engineering and mathematics (STEM).
It’s long been acknowledged that students from disadvantaged backgrounds are under-represented in science, technology, engineering and mathematics careers. Now, research conducted by UCLan and funded by STFC shows the causes of this problem and points to innovative solutions. The Blackpool Physics; Inspire, Engage, Research (PIER) project found that primary school children from low socio-economic areas are just as interested in science but lack knowledge about possible science careers.
The PIER project is following a group of pupils as they progress from Grade 6 to Grade 9, using surveys, interviews and other assessments to measure interest in science. These initial findings suggest that attempts to increase science participation among young people should not simply promote the subject as “fun” or “interesting”. Instead, greater impact could be achieved by demonstrating clearly how science can open possible future career opportunities.
Many of the pupils taking part in the study understood that studying science could be useful but few could explain why, suggesting a need for greater education about STEM careers. As well as broadening our understanding of the issue, the PIER project is solving the problem head on. The team has carried out a variety of activities each year for the participants, including “meet the scientists” events, trips to UCLan’s Alston Observatory as well as family science events at school.
Lead Researcher and STFC Fellow in Public Engagement, Professor Robert Walsh, said, “Much government policy towards boosting science in higher education focuses on an assumed lack of interest and desire in low-socioeconomic groups.” However, the enthusiasm is already there and this “hidden science identity” needs to be revealed and translated into real-life prospects for these young people. We’re recommending that programs instead allow young people to explore their science identity more fully and provide innovative ways to discover the jobs that studying science may lead to.
1. What do people generally believe about poor students?| A．They have no interest in STEM careers. |
| B．They are not engaged enough in science. |
| C．They are more representative of science. |
| D．They have many character disadvantages. |
| A．Assessing pupils’ performance. |
| B．Increasing the surveys of pupils. |
| C．Demonstrating the potential value of science. |
| D．Promoting the subject as “fun” or “interesting”. |
| A．To boost science development. |
| B．To meet the pupils’ needs for school events. |
| C．To promote teaching related careers’ development. |
| D．To improve students’ understanding of STEM careers. |
| A．What Is the Definition of PIER? |
| B．Increase Pupils’ Learning Awareness |
| C．How Does the PIER Project Come into Being? |
| D．The PIER Project Helps Poor Pupils Engage in Science |
4 . Margot doesn’t have a garbage can. It doesn’t need one because Margot simply doesn’t cause anything to get thrown away. The restaurant doesn’t allow any type of single use plastic. Margot, which opened last year, is one of the small but growing restaurants around the world aiming to avoid not only food leftovers, but also any garbage.
“Food waste has been increasing as an issue for restaurants over the last 10 years,” says Calvin Brown. He runs the Sustainable Restaurant Association. Based in the United Kingdom, the organization helps food business become more environmentally responsible. He says that food waste contributes to releasing the greenhouse gas, so there is strong motivation to reduce waste and help the environment.
In the USA, food waste and packing account for nearly half of the material sent to landfills. Restaurants from McDonald’s to Starbucks are addressing this issue with “no straw Mondays” and limits on single-serving plastic, but a handful of restaurateurs are trying to get rid of rubbish entirely. There’s also economic case to be made for waste reduction. One study shows that restaurants save seven dollars for every dollar invested in anti- waste methods.
Avoiding food waste is the first and perhaps most obvious challenge for sustainable restaurants. Doug McMaster, chef at Silo in London, only serves a set menu. This removes the worry that one particular item won’t sell well, and will spoil in the refrigerator. Compost (堆肥) is a necessity as well. Nolla (meaning “zero” in Finnish) in Helsinki, Finland is giving compost to its suppliers as well as its diners. Nolla also has food- tracking software more commonly used among corporate food service companies to keep track of what sells and what rots.
Sometimes restaurants call themselves environmentally friendly, but they might just be using the label. Calvin offers some pointers on what to look for to make sure a restaurant is truly committed to sustainability.
1. What does Margot feature?| A．Its large size. | B．Its opening hours. |
| C．Its zero-waste goal. | D．Its plastic garbage cans. |
| A．Ways of packaging food. |
| B．The issue of investing in services. |
| C．The importance of environmental protection. |
| D．Efforts of some restaurants to reduce rubbish, |
| A．Only serve a set menu. |
| B．Hardly use refrigerators. |
| C．Supply compost to its customers. |
| D．Keep track of diners’ preferences. |
| A．Expand food business. |
| B．Use eco-friendly labels. |
| C．Save money on dealing with kitchen garbage. |
| D．Contribute to sustainable development of the food industry. |
5 . Two high school students have identified four new planets in distant space about 200-light-years from Earth, making them “the youngest astronomers” to make such a discovery.
Kartik Pingle, 16, and Jasmine Wright. 18, who both attend schools in Massachusetts, participated in the Student Research Mentoring Program (SRMP). With the help of Tansu Daylan, an MIT doctor for Astrophysics and Space Research, the students studied and analyzed data from the Transiting Exoplanct Survey Satellite (TESS). Together they focused on Tess Object of Interest (TOI) 1233, a nearby, bright sun-like star and here they found four planets rotating（旋转）around the star. “We were looking to see changes in light over time,” Pingle explained, “the idea is that if the planet transits the star, or passes in front of it, it would periodically cover up the star and decrease its brightness.”
While studying 1233, Pingle and Wright had at least hoped to find one planet but were overwhelmed with joy when a total of four were spotted. “I was very excited and very shocked.” Wright said. “We knew this was the goal of Daylan’s research, but to actually find a multi-planetary system, and be part of the discovering team, was really cool.” Three of the newly discovered planets are considered as “sub-Neptunes”, which are gaseous, but smaller than the Neptune that lives in our solar system. While observing the planets, the team determined each one completes their orbit around 1233 every six to 19.5 days. However, the fourth planet is called a “super-Earth” for its large size and rockiness this one orbits around the star in just under four days.
“We have long been studying planets beyond our solar system and with multi-planetary systems, the two young students are kind of hitting the jackpot. They are really blessed.” Daylan said. “The planets originated from the same disk of matter around the same star, but they ended up being different planets with different atmospheres and different climates due to their different orbits. So, we would like to understand the basic processes of planet formation and evolution using this planetary system.”
Daylan added that it was a “win-win” to work with Pingle and Wright on the study. “As a researcher, I really enjoy interacting with young brains that are open to experimentation and learning and have slightest bias（偏见）.”he said, “I also think it is very beneficial to high school students, since they get exposure to cutting-edge research, and this prepares them quickly for a research career.”
1. How did the two students identify the four planets？| A．By helping professor Tansu Daylan with the data. |
| B．By analyzing the change of brightness of star 1233. |
| C．By studying Neptune that lives in our solar system. |
| D．By interacting with other young talented brains. |
| A．It was made by two high school students. |
| B．It was made with an innovative approach. |
| C．It was meant to be made by Tansu Daylan. |
| D．It found the largest number of planets at a time. |
| A．Making a discovery difficultly. | B．Achieving the goal easily. |
| C．Succeeding in something luckily. | D．Performing a task carefully. |
| A．It allows the scientists to work with young people without prejudice. |
| B．It equips future astronomers with better researching abilities. |
| C．It provides more perspectives and thus boosts more discoveries. |
| D．It arouses students’ interest in exploring the unknown universe. |
6 . You may have recently seen a video from the Beijing Wildlife Zoo becoming a hit. What exactly was so interesting about this video? It shows a dog playing with big cats four to five times its size! Many people might wonder if this dog has a death wish, but it seems that the dog and the big cats are good friends.
The dog was actually raised alongside the lion and tiger cubs, making up an odd but loving family, according to zoo officials. As opposed to the common belief, cross-species friendship has been around for centuries. People have domesticated many animals, most notably cats and dogs, and formed bonds with them as pets. Perhaps you even have a pet yourself.
There are many other instances of cross-species friendships.
At an animal sanctuary in Santiago, Chile, a jaguar named Marina and a deer named Laura formed a friendship after they both came to the park. As neither animal had a mother, sanctuary staff said they instantly bonded when they met. Laura had been rescued from a slaughterhouse while Marina had been rescued from the street.
One possible explanation for these friendships is the environment of the zoo. Animals don’t hunt for their food and don’t need to worry about marking their territory or looking for mates in the way an animal in the wild would. “All those activities take time and energy, and if these needs are removed, the animals get bored,” Gordon Burghardt, a psychologist at the University of Tenessee, US, told The Atlantic magazine. “In this particular situation, the animal’s motivation to engage socially and playfully may be higher in its need hierarchy(等级)than eating.”
Marc Bekoff, former biology professor at the University of Colorado, US, told Slate magazine, “I think the choices animals make in cross-species relationships are the same as they’d make in same-species relationships. Some dogs don’t like every other dog. Animals are very selective about the other individuals who they let into their lives.”
1. What is the common opinion about the friendship between animals?| A．It’s easier for dogs and cats to become friends. |
| B．Animals tend to play with peers of the same species. |
| C．The friendship between animals is not solid and reliable. |
| D．It’s common that animals of different species can become friends. |
| A．To present a truth. | B．To explain a phenomenon. |
| C．To introduce the topic. | D．To provide a proof. |
| A．The existing tradition. | B．The influence by mates. |
| C．The animals’ inner social drive. | D．The animals’ raisers’ instruction. |
| A．To appeal to people to treasure animals. |
| B．To inform readers of a special friendship. |
| C．To demonstrate the history of bringing up pets. |
| D．To compare friendship between cross-species and same-species. |
7 . Do you want to see majestic lions roaring, rare rhinos running and colorful birds flying? You’ll find this incredible display of nature in the Kenya Lake System in the Great Rift Valley.
First stop
Fly into Nairobi, the capital of Kenya. This great city is known for its fashion markets and beautiful art. And be sure to pick up some rich Kenyan coffee while you’re there! Then head for the countryside.
Plan your trip
The largest of the three lakes in the system, Lake Nakuru, is less than 175 kilometers from Nairobi. But Lakes Bogoria and Elementaita are equally worth a visit. You can stay at one of several choices of luxurious cabins in the valley. And if you sign up for a trip, be sure to put flamingos, the white and pink birds, at the top of your list.
Paradise
The Kenya Lake System is shallow and alkaline (碱性的). That means it supports vegetation such as green algae, a food source for many waterfowl. Hundreds of species of birds flourish here, using this area as a major breeding and nesting ground. Water buffalo, leopards, monkeys and the endangered Rothschild giraffe also make this area their home.
Other sights
Wildlife isn’t the only natural wonder in the Great Rift Valley. The valley marks a place where the earth is divided far below the surface. This rock separation below ground leads to noticeable features above ground. Walking around Lake Bogoria especially, you will see steam rising from hot springs.
Other activities include golfing, horseback riding and hiking. The fun doesn’t stop when the sun goes down, either. The river valley is far from city lights, so many visitors gaze at the stars shining above.
If you are ready for a wildlife experience, don’t hesitate!
1. Where can you buy fashionable gifts in Kenya?| A．Nairobi. | B．Lake Nakuru. | C．Lake Bogoria. | D．Lake Elementaita. |
| A．Living in a cabin. | B．Seeing flamingos. |
| C．Visiting hot springs. | D．Gazing at shining stars. |
| A．It has countless lakes worth visiting. | B．It’s an ideal place for wildlife to live. |
| C．Its water is unsuitable for plant growth. | D．It’s famous for rich culture and history. |
8 . Humans have been living and working on the space station for 20 years. Their meals are packaged, though sometimes astronauts receive fresh treats from resupply missions. The longer that packaged food is stored, the more it loses nutrients like vitamin C and vitamin K.
Astronauts have successfully grown 10 different crops on the space station since 2015 and had the chance to sample each one. The International Space Station hosted a party for astronauts on Friday as they celebrated the harvest of the first Chili (辣椒) grown in space. The crew finally had a chance to taste the peppers after initially kicking off the plant experiment on the space station in July.
Plant Habitat-04 is one of the most complex plant experiments on the orbiting laboratory to date because peppers take much longer to grow than the previous experiment plants. After growing for four months, the peppers were harvested on Friday.
Peppers provide a great source of vitamin C, as well as other key nutrients. Pepper plants self-pollinate, so they are easy to grow, and they are a pick-and-eat crop that doesn’t have to be cooked. They are also safe to eat raw.
A side effect of life in zero gravity is that astronauts often lose some of their taste and smell, so spicy or well-seasoned foods are a favorite. Adding fresh greens or peppers to the menu allows astronauts to liven up their regular meals. But growing and tending to the plants can also produce other benefits.
Astronauts have described the joy from seeing—as well as smelling and caring for—leafy green plants on the space station that remind them of Earth.
“Growing colorful vegetables in space can have long-term benefits for physical and psychological health,” said Matt Romeyn, principal investigator for the experiment.” We are discovering that growing plants and vegetables with colors and smells helps to improve astronauts’ well-being.”
1. What does underlined “kicking off” in the 2nd paragraph mean?| A．Launch. | B．Complete. | C．Quit. | D．Announce. |
| A．The technology. | B．Growing process. |
| C．The varieties of plants. | D．Growing time required. |
| A．They are delicious. | B．They restore their appetite. |
| C．They help kill diseases. | D．They improve their memory. |
| A．The Fun in the Space Life |
| B．The Common Goal in the Space Mission |
| C．The First Chili Peppers Grown in Space |
| D．A Research Finding from the Space Mission |
9 . Beavers (海狸) and their dams can positively impact essentially any environment they’re placed in, even the extreme heat of the Moab Desert in Utah. And that is what a university researcher has founded. Looking for solutions to drought and wildfires, a Utah State University student Emma Doden began relocating (搬迁) beavers caught in other parts of the state into small, struggling waterways around the Price and San Rafael rivers.
Studies have shown that beaver dams can vastly improve the quality of wetlands and streams leading to better animal life and improved river health. It was for this service that the “ecosystem engineer” was targeted by Doden as a potential rescuer, even if the idea relocating beavers to the desert caused a few raised eyebrows. “We believed the system could support a lot more beavers”, Doden said, “and we wanted to supplement it with beavers.”
“Beaver dams are gaining popularity as a low-tech, low-cost strategy to build climate resiliency (还原能力) at the landscape scale,” says one study. “They slow and store water that can be accessed by plants during dry periods, effectively protecting riverside ecosystems from droughts.” Another study found that the ponds which are created on the dammed side of the beaver homes can store huge amounts of sediment (沉淀物) then distribute it more safely around the river ecosystem.
This is the case, the study found, both in entirely wild areas with no human activities and those near to intense agricultural regions, meaning that no matter the conditions of sedimentation, beaver dams can help keep waterways clearer. Doden’s university has a program for catching beavers and relocating them to the desert, where they will build dams to provide these benefits. “The eventual goal is to get them to build dams,” she said. “The dams are what are going to increase habitat complexity and restore water.”
1. Why did Emma Doden begin relocating beavers into other places?| A．Because beavers can positively impact the environment there. |
| B．Because the number of beavers has increased sharply. |
| C．Because beavers have the ability to survive in extreme conditions. |
| D．Because beavers are doing harm to the environment in original places. |
| A．It surprised some people. | B．It could cause damage to the desert. |
| C．It would pose a threat to the lives of beavers. | D．It was resisted by many researchers. |
| A．Expensive. | B．Profitable. | C．Eco-friendly. | D．Technology-demanding. |
| A．Entertainment. | B．Health. | C．Education. | D．Science. |
10 . The Australian Koala Foundation says Australia has lost about 30 percent of its koalas over the past three years. The non—profit group says drought, wildfires and development projects played a part in the drop in the koala population. They are asking the government to do more to protect the creature’s environment.
The group said the koala population has dropped to less than 58,000 this year from more than 80,000 in 2018. The biggest decrease(减少) was in the state of New South Wales, where the numbers have dropped by 41 percent. Deborah Tabart leads the Australian Koala Foundation. She called the drop quite huge. Only one area in the study was estimated(预估) to have more than 5,000 koalas. Some areas were estimated to have as few as five or ten.
Tabart said, “What we’re concerned about are places like western New South Wales where the drought over the last ten years has just had this cumulative(积累) effect, river systems completely dry for years, and red gum plants, which are the lifeblood of koalas, are dead.” The loss in New South Wales likely sped up after large forest areas were destroyed by wildfires in late 2019 and early 2020. But some of those areas already had no koalas.
Tabart said the country needs a koala protection law. Land clearing by property developers and road builders has also destroyed the koala’s environment. “I think everyone gets it that we’ve got to change. But it bulldozers (推土机) keep working, then I really fear for the koalas,” Tabart said.
1. How did the author develop the second paragraph?| A．By giving numbers. | B．By telling stories. |
| C．By following the time order. | D．By comparing opinions. |
| A．The harm to koalas from wildfires. |
| B．The bad effect of development. |
| C．The death of various trees. |
| D．Some causes of the decrease in koalas. |
| A．Fighting against climate change. |
| B．Making a special law. |
| C．Stopping housing building. |
| D．Keeping wildfires from spreading. |
| A．Australia’s Wild Animals Are Facing Big Danger |
| B．Effects of Australia’s Wildfires Are Beginning to Show Up |
| C．Australia Lost One-Third of Its Koalas in Last Three Years |
| D．Koalas in Australia Could Disappear from the Earth in the Future |
