1. When did the earthquake take place?
| A．On Tuesday. | B．On Wednesday. | C．On Thursday. |
| A．He was badly hurt. |
| B．He was buried under a refrigerator. |
| C．He was slightly wounded. |
| A．He stayed in a refrigerator. |
| B．His father pulled him out in time. |
| C．Their house escaped the earthquake. |
| A．About 500. | B．About 5, 000. | C．About 50, 000. |
2 . One Saturday in June, I got off the train from Vienna at Altenberg station, in the midst of a gathering of bathers, such as often flock to our village at fine weekends.
I had gone only a few steps along the street and the crowd had not yet scattered when, high above me in the air, I saw a bird whose species I could not at first determine. It flew with slow, measured wing-beats, varied at set intervals by longer periods of gliding. It seemed too heavy to be a hawk; for a stork (鹳), it was not big enough and, even at that height, neck and feet should have been visible. Then the bird made a sudden turn so that the setting sun shone for a second full on the underside of the great wings which lit up like stars in the blue of the skies. The bird was white. By Heaven, it was my cockatoo (凤头鹦鹉)! The steady movements of his wings clearly indicated that he was setting out on a long-distance flight.
“What should I do? Should I call to the bird?” Well, have you ever heard the flight-call of the greater cockatoo? No? But you have probably heard pig-killing in the traditional method. Imagine the loudest long cry a pig could make, picked up by a microphone and amplified many times over by a powerful speaker. A man can imitate it quite successfully, though somewhat weak, by shouting at the top of his voice “O-ah”. I had already proved that the cockatoo understood this imitation and promptly “came to heel”. But would it work at such a height? A bird always has great difficulty in making the decision to fly downwards at a steep angle. To yell, or not to yell, that was the question. If I yelled and the bird came down, all would be well, but what if it sailed calmly on through the clouds? How would I then explain my song to the crowd of people?
Finally, I did yell. The people around me stood still, rooted to the spot. The bird hesitated for a moment on outstretched wings, and then, folding them, it descended in one dive and landed upon my outstretched arm. Once again I was master of the situation.
1. What was the author’s cockatoo like?| A．It looked like a hawk. | B．It was blue and shiny. |
| C．Its neck and feet were long. | D．It was white with great wings. |
| A．By waving at it quickly. | B．By singing a song loudly. |
| C．By screaming his head off. | D．By using a powerful loudspeaker. |
| A．Flew about. | B．Came back. | C．Came around. | D．Landed on the ground. |
| A．He knew birds very well. | B．He could speak with his bird. |
| C．He liked showing off in public. | D．He often surprised people around him. |
3 . The Thermo Fisher Scientific Junior Innovators Challenge is a science competition for U. S. middle-school students. It's run by Society for Science, which also publishes Science News Explores. The 30 finalists in this year's competition traveled to Washington, D. C. and also showed off their research projects.
Sharanya Chudgar, 14 years old, is one of the finalists in the competition and built a trash-collecting robot. The wheeled machine of the robot uses sensors to spot litter and a pan to pick it up. The robot's metal-detecting sensor helps it sort garbage from recyclables. And a light sensor can let the robot's solar panel angle itself toward the sun, collecting as much energy as possible.
Sharanya got the idea to build her trash collector by participating in litter cleanups. "When I signed up to volunteer at our local trash cleanup, I saw how much litter poliution there was and I knew that I had to fix this problem," Sharanya says. "People do have very limited time and resources, right? But robots don't. So it was then that my project idea formed in my head."
"Building the robot is my favorite part of this project," Sharanya says. "Ever since first grade, I've loved building Legos and building my robot felt just like building a Lego. But this project was a completely new experience since I hadn't ever had any experience in robotics before. Throughout the project, I had to use tons of power tools and I even had to cut pieces of metal to certain lengths. Whenever I needed to use a power tool, I had to turn to my dad who was always there to help out if necessary."
"It might seem difficult at times, but sticking to this and changing just one variable at a time gets you the best results," Sharanya says. This middle school scientist is solving global problems of litter pollution. For some, a science project might be an assignment or a fun hobby. But for Sharanya, doing research can also be a chance to help others and make the world a better place.
1. What can be known about the trash-collecting robot?| A．It is environment-friendly. | B．Its solar panel can't turn. |
| C．It has multiple purposes. | D．Its shape is like a human. |
| A．The limited natural resources. | B．The encouragement from the locals. |
| C．Her trash cleanup experiences. | D．Her participation in the competition. |
| A．To express her thanks to her father. | B．To show her love for the project. |
| C．To explain the difficulty of the project. | D．To tell her interest in building Legos. |
| A．Unconcerned. | B．Negative. | C．Critical. | D．Approving. |
4 . Until recently, gravitational waves could have been the stuff of Einstein’s imagination. Before they were detected, these waves in space time existed only in the physicist’s general theory of relativity, as far as scientists knew. Now, researchers are on the hunt for more ways to detect the waves. “The study of gravitational waves is booming,” says astrophysicist Karan Jani of Vanderbilt University in Nashville. “This is just remarkable. No field I can think of in fundamental physics has seen progress this fast.”
Just as light comes in a variety of wavelengths, so do gravitational waves. Different wave lengths point to different types of origins of the universe and require different kinds of detectors. Gravitational waves with wavelengths of a few thousand kilometers—like those detected by the United States, Italy and Japan—come mostly from pairs of black holes 10 or so times the mass of the sun, or from collisions of dense cosmic blocks called neutron stars (中子星). These detectors could also spot waves from certain types of exploding stars and rapidly moving neutron stars.
In contrast, huge waves that span light-years are thought to be created by orbiting pairs of bigger black holes with masses billions of times that of the sun. In June, scientists reported the first strong evidence of these types of waves by turning the entire galaxy (星系) into a detector, watching how the waves make slight changes to the timing of regular blinks from neutron stars throughout the Milky Way.
Physicists now hope to dive into a vast, cosmic ocean of gravitational waves of all sorts of sizes. These waves could reveal new details about the secret lives of exotic objects such as black holes and unknown parts of the universe.
Physicist Jason Hogan of Stanford University thinks there are still a lot of gaps in the coverage of wavelengths. “But it makes sense to cover all the bases. Who knows what else we may find?” he says. The search for capturing the full complement of the universe’s gravitational waves exactly could take observatories out into the moon, to the atomic area and elsewhere.
1. What does Karan Jani think of the current study on gravitational waves?| A．It is rapid and pioneering. |
| B．It is slow but steadily increasing. |
| C．It is interrupted due to limited detectors. |
| D．It is progressing as fast as any other field. |
| A．The creation of different kinds of detectors. |
| B．Collisions of planets outside the solar system. |
| C．The presence of light in different wavelengths. |
| D．Activities involving black holes and neutron stars. |
| A．By analyzing sunlight. |
| B．By locating the new galaxy. |
| C．By using the whole galaxy as a tool. |
| D．By observing the sun’s regular movement. |
| A．It’ll exclude the atomic field. |
| B．It’ll focus exactly on the mapping of the galaxy. |
| C．It’ll require prioritizing certain wavelengths on the moon. |
| D．It’ll explore potential places to detect gravitational waves. |
Dunhuang, an oasis (绿洲) in the Taklamakan Desert, used to be a major stop along the Silk Road, but is now mainly a fascinating tourist destination.
Those interested
Also, there are few things as special as walking across the desert oasis at sunrise.
No trip to Dunhuang is complete without visiting the Dunhuang Museum,
6 . Pigeons have a bad reputation. Maybe these birds’ familiarity makes them an easy target: They are common residents of every continent, save Antarctica. Some people think pigeons are dirty or diseased, as they spend chunks of their days pecking at trash. Others might ignore them entirely, or perhaps go so far as to call them “rats with wings.” But Rosemary Mosco, a science writer, cartoonist, and naturalist, believes these creatures deserve more respect. “We’ve gotten them super wrong,” she says.
In Mosco’s latest book, A Pocket Guide to Pigeon Watching, she shares her positive views of the species that fell from grace. Once highly valued for their meat, and way finding abilities, pigeons are now largely rejected by human society. But Mosco, a lifelong city-dweller, has always found them fascinating. “If you do watch them, you’re just entranced,” she says. Her travel-sized book details pigeons’ coloration, field marks, and anatomy (解剖结构). But it’s more than a field guide. It’s also an informative account of pigeon history, biology, and behavior, complete with Mosco’s delightful illustrations.
Because pigeons’ fates are so connected with our own, pigeon history closely mirrors ours. Pigeons were distributed across the globe due to centuries of European exploration and colonization. In North America colonists hunted the native Passenger Pigeon for meat and destroyed its native forest habitat, driving it to extinction. Wherever humans domesticated pigeons, some escaped and went wild. Today’s city pigeons are descended from those birds.
Mosco says she’s met more birders who like pigeons than those who hate them. Birders, with well-developed observation skills, can understand pigeons’ entertaining behavior, she says. Plus, if pigeons aren’t enough of a draw on their own, there could be predators, such as hawks or falcons, nearby.
She wants all her readers to be kind to pigeons. But she also hopes that some will follow their pigeon fancy and become hooked on birding. “It’s my secret plot,” she says. After reading her book, you may agree with her that pigeons are as worthy a spark bird as any other.
1. What do the underlined words “fell from grace” mean in paragraph 2?| A．Live in danger. | B．Push the envelope. |
| C．Play with fire. | D．Get out of favor. |
| A．It covers detailed pigeon science with illustrations. |
| B．It shows the author’s views of a particular subject. |
| C．It features numerous beautiful images and diverse cultures. |
| D．It conveys some views of theories accepted widely. |
| A．To learn more about pigeon history and biology. |
| B．To be fond of birding and follow their pigeon interest. |
| C．To stop hating pigeons and start respecting them more. |
| D．To understand pigeons’ behavior and appreciate their beauty. |
| A．A chapter of a book. | B．A book introduction. |
| C．An animal story. | D．An academic paper. |
7 . More than 80 percent of global heat is absorbed by the ocean, which has a massive capacity to store and give off heat. High sea-surface temperatures are causing long-term damage to coral reefs (珊瑚礁). Corals are dying. The IPCC (政府间气候变化专门委员会) projects that up to 90 percent of coral reefs could disappear if global warming reaches 1.5℃. Another reason corals are in trouble is because of ocean acidification. Higher carbon dioxide levels have shift ed the chemistry of the ocean, making it more acidic, and corals and sea creatures have trouble growing in acidic conditions.
When ocean water warms, it expands in volume. This is a major cause of the rise in sea levels, along with the water added to the ocean by the melting of land-based glaciers (冰川). The sea level has risen by an average of 20 centimeters since the late 19th century, and the research by scientists studying the last 25 years of satellite data found that the ocean water is rising faster and faster. If it continues at its current rate, the rise in sea level by 2100 will be more than double the current estimates. Sea level rise leads to the destruction of coastal wetlands, flooding and damage to water ecosystems.
Temperature and precipitation (沉淀) are key elements of climate. A warmer climate means that more water rises from both the land and ocean, and a warmer atmosphere holds more of that water. Scientists have noticed that there are more heavy rainfall events. Additionally, higher water temperature in streams, lakes, and rivers lead to lower levels of dissolved oxygen in the water, which impacts the survival and populations of fish and other sea life.
Especially troubling are the extreme weather events that are happening more often around the world. Hurricanes are ramping up in intensity, particularly in North Atlantic. The year 2017 was a busy one for Atlantic hurricanes. Meanwhile, in the western United States, the state of California has had record-setting drought conditions, which began in 2012.
1. What does the author intend to tell us in Paragraph 1?| A．Global warming has little damage to the land. | B．Ocean acidification affects the sea temperature. |
| C．Coral reefs are in danger of disappearing. | D．Corals and sea creatures need critical surroundings. |
| A．Sea level rise has positive effect on sea animals. |
| B．By 2100 the sea level will rise 20 centimeters. |
| C．Global heating is the direct cause of wetlands destruction. |
| D．The rise of sea level is beyond our imagination. |
| A．Increasing. | B．Failing. | C．Appearing. | D．Changing. |
| A．High Sea-surface Temperatures to Creatures | B．Global Warming, What Damages It Causes |
| C．Ways to Stop High Sea-surface Temperatures | D．Extreme Weather Events and Global Warming |
8 . Volunteer at the EcoTarium! We simply could not offer the programs and special events that make the EcoTarium a unique resource to our community without our diverse and dedicated corps of volunteers. To be considered for a more specific position, look through the volunteer listings below, and submit an application.
Zoo Ambassador Volunteer
Our zoo ambassador volunteers will assist the Zoology Department to connect with guests through engaging educational experiences about our animal residents. We are looking for volunteers who are passionate about animals and excited to interact with guests of all ages. Volunteers may also complete behavioral studies on numerous animals within the care of the EcoTarium to help enhance the welfare for our animals!
Animal Care Volunteer
Animal care volunteers will aid in all areas of husbandry (农牧业), including feeding, cleaning, record keeping, training animals, and behavioral observations. They will work with a variety of animals under our care, including mammals, birds, reptiles, amphibians and insects. The position is physically demanding and requires working in all weather conditions.
Education Program Volunteer
Through conversations and hands-on activities, education program volunteers help visitors make meaningful connections to our exhibits, encourage curiosity and scientific inquiry, and challenge visitors to dive deeper into the concepts explored at our museum.
Collections Volunteer
The EcoTarium seeks volunteers who are interested in making a contribution to science by uncovering lost specimens (标本) in the EcoTarium collection! Photograph, measure, and take notes on birds, eggs, seashells, or pressed flowers. This is an excellent position for a high school or college student considering a career in biology or lab science. It is also appropriate for citizen scientists of any age. It offers an opportunity to see examples of rare or extinct plants and animals.
1. What can an animal care volunteer do?| A．Collect lost specimens. |
| B．Learn to feed and clean animals. |
| C．Finish some studies on the exhibits. |
| D．Help elderly visitors interact with animals. |
| A．Collections Volunteer. | B．Animal Care Volunteer. |
| C．Education Program Volunteer. | D．Zoo Ambassador Volunteer. |
| A．To list the advantages of volunteers. |
| B．To spread knowledge about volunteers. |
| C．To train more people to become volunteers. |
| D．To introduce some positions about volunteers. |
9 . Catherine Krestyn furnished (布置家具)her home mainly with hard rubbish, such as the chairs, doors and lamps, which have been collected from the street where she lives. And it’s a way of life she’s sharing with her community in the hope of making a difference.
Catherine leads a 6,000-strong online group called Boroondara Hard Rubbish Rehome, where members upload pictures of their hard rubbish piles for eager locals to find. She started the group in 2022 with her childhood friend Jennie Irving, hoping to build a community of thrift (节俭)where they lived. The pair have stopped more than 7,000 kg of hard rubbish going to landfill since they founded the group.
Some items are ready as they are, like chairs and lamps, and others take a bit of effort to clean up, like the old, wooden doors.
Local teacher Ruth Polgar discovered the group while surfing the Internet and has since decorated her classroom with second-hand items, including artwork she has rehomed from a neighbour. “We regularly take unneeded items from the group and use them for our school projects,” she says.
Running the group can be really challenging for Catherine. But she doesn’t resent those who have to let go of their possessions because of stressful circumstances. “If you’re downsizing or if you’re clearing an old house, quite often you’re desperate for access to easy options,” she says. “Hard rubbish piles are often that option.”
All Catherine wants to do is give her community a way to reduce their waste, and to send a message to those in charge that things need to urgently change.
“The government has big targets around sustainable development leading into 2030. We want to start speeding that up even sooner,” she says. “We’re suffering from our own waste really, so anything that we can all do on a practical level helps. We should first make lifestyle choices and be prepared to go second-hand.”
1. Why did Catherine set up Boroondara Hard Rubbish Rehome?| A．To create a community of thrift. | B．To donate her collection to charity. |
| C．To collect hard rubbish for locals. | D．To decorate the houses for the homeless. |
| A．She prefers second-hand items. | B．She buys items on the Internet. |
| C．She supports Catherine’s cause. | D．She teaches art at a local school. |
| A．Feel angry about. | B．Feel pleased with. |
| C．Show sympathy for. | D．Show interest in. |
| A．Setting ourselves a big goal. | B．Giving throwaways a second life. |
| C．Meeting the government’s requirements. | D．Replacing old furniture regularly. |
10 . In 2011, artist Grimanesa Amorós stepped off a boat made of totora reeds (芦苇) onto an island—also made of totora reeds — in the northwest portion of Lake Titicaca. It’s home to one of the world’s most innovative achievement of human engineering: the Uros Islands.
The man-made floating islands, which are home to the native Uros people, are created by putting layers upon layers of totora roots and reeds. This water-resistant plant grows in the lake and is the lifeblood of the Uros community. It is used to make boats, houses, roofs, mattresses (床垫) and more. The plant is also eaten and serves as medicine, and its flowers are used to make tea.
However, the Uros weren’t always dependent on the totora. More than 500 years ago, the growing Inca Empire began to invade the Uros’ mainland villages. To beat this threat, the Uros began to build the islands, which could be launched deep into Lake Titicaca, away from danger. Hundreds of years later, there are now about 120 of these constructed islands, with around 1,300 people living on them.
To build the islands, the Uros first gather large blocks of totora roots. Multiple blocks are pulled together, and the roots and reeds mix naturally to form a layer about 1 to 2m thick. The totora reed is laid on top of this floating base. The Uros use a long tool to reach deep down into the water and cut the plant above the base. Then, the reeds are dried in the sun for one to four weeks and bundled (捆绑) together using a rope. Once dried, totora reeds are placed in alternating directions on top of the root blocks and become the ground that the Uros walk and build their homes on.
Today, urban influences are evident on the islands: Solar panels power bedroom lights and small TVs; a radio station operates on the main island. It’s evident that these modern changes and tourism have changed the Uros’ life on the lake. One thing remains certain, though. As long as there is totora growing at Lake Titicaca, the islands’ rooted foundation will stay the same.
1. Which word can best describe the role totora reeds play in the Uro’s life?| A．Essential. | B．Symbolic. | C．Protective. | D．Sustainable. |
| A．To develop tourism. | B．To maintain their lifestyle. |
| C．To escape from enemies’ attack. | D．To be separated from the world. |
| A．The key to selecting building materials. | B．The procedure of building the islands. |
| C．The difficulty of living on the island. | D．The method of spotting reeds. |
| A．Fancy Lifestyles of the Uros | B．Innovative Building Materials |
| C．Floating Homes on Lake Titicaca | D．A Must-see Tourist Attraction of Lake Titicaca |
