| A．drawback | B．collapse | C．hatred | D．abstract |
| A．parents | B．patents | C．patterns | D．patients |
| A．energetic | B．novel | C．fatal | D．wicked |
| A．artificial | B．automatic | C．virtual | D．relevant |
| A．accessible | B．accidental | C．potential | D．imaginative |
Each year, as many as one billion birds are killed in the US from collisions (相撞) with glass windows and buildings every year. Birds that crashed into Philadelphia buildings began to be collected in the 1890s. Nearly 100 species of birds are known to have died out from crashes with buildings and other structures in Philadelphia. Many other species are probably affected in the city.
Called Lights Out Philly, the voluntary program in Philadelphia encourages buildings to turn out or dim unnecessary external and internal lights between midnight and six o’clock early in the morning to protect birds as they pass through during migration seasons.
Bird migration seasons are from April l to May 31 in spring and from August 15 to November 15 in fall. Each year, millions of birds pass through Philadelphia along a migration route known as the Atlantic Flyway. Bird-glass crashes are very common for migrating birds, most of which travel at night. Glass is difficult for them to recognize as hard surfaces, and artificial light can fool them into crashing with buildings and outdoor structures. Turning off lights between midnight and sunrise helps minimize the effect of artificial light when most birds are migrating.
On Oct. 2, 2020, a stormy and foggy day, Philadelphia had its largest mass collision event in more than 70 years with an estimated 1,000 birds crashing with buildings in one 3.5-square block area in just one day. Paired with a terrible storm of weather and fog conditions, the bright city and building lights attracted and confused the migrating birds, causing them to crash with buildings and outdoor structures.
Even if you don’t play a part in managing the lights of a big building, you can help birds avoid crashes by making the glass opaque to reduce the amount and intensity of artificial light at night, changing the color of lighting to blue or green, shortening the duration lights are on, directing the lighting downward or screening lighting.
1．What is the first paragraph mainly about?| A．The rich biological diversity in Philadelphia. |
| B．Great efforts to protect migrating birds in Philadelphia. |
| C．The present and the past of the bird conservation in America. |
| D．The serious consequence of bird-glass crashes in Philadelphia. |
| A．Bad weather conditions. | B．Traveling in the day. |
| C．The mistaken route. | D．Too many buildings. |
| A．Light-reflecting. | B．Delicate. | C．Lightproof. | D．Clean. |
| A．It Is Difficult to Save the Migrating Birds |
| B．Philadelphia Turns out Lights to Save Migrating Birds |
| C．External and Internal Lights Affect the Bird Migration |
| D．Lights Out Philly Program Helps Save Endangered Birds |
What do you think robots are capable of? You might be able to find one that fits your needs at the World Robot Conference (WRC) 2022 in Beijing. Held from Aug 18 to 21, more than 500 robots were on display at the WRC, and this year’s WRC showed quite a few cutting-edge inventions.
With the help of various sensors and an AI system, the robot can collect fruit according to its ripeness, quality and size. The robot first locates the fruit and then uses sensors to decide whether it is ripe, with a robotic arm picking the fruit gently. The fruit is then categorized, ending up in a basket according to its size. Wu Jiafeng, the exhibitor of the fruit- picking robot, told CCTV that more robotic technology will be used in agriculture in the future, including robots for daily inspection and weeding.
Medical staff conducting nucleic acid tests often find their work tough, especially under the summer heat. A nucleic acid test robot developed by Tsinghua University and a Chinese biotech company was presented at the WRC. The robot can collect throat swabs, process samples, as well as produce and upload the results within 45 minutes. The whole process will not require the involvement of humans or laboratories.
Students from BDA School of the High School Affiliated to Renmin University of China had their own exhibition at the WRC. Despite their young age, the students brought fascinating inventions and ideas. For example Wang Jiarun, a junior student at the school, designed a three-dimensional parking facility. Since there are usually too few parking spaces in older residential areas, Wang’s work aims to fit more cars into current parking spots. The facility works like a sky wheel with six parking spots. When cars need to be picked up, the facility rotates (旋转) steadily, placing the car on the ground.
1．What’s the author’s purpose in writing this article?| A．To state the importance of robots. |
| B．To advertise three kinds of robots. |
| C．To introduce some front-line inventions of robots. |
| D．To explore the features of young people’s inventions. |
| A．It can save manpower. |
| B．It looks like a lively human. |
| C．It processes samples with the help of doctors. |
| D．It can produce and upload the results in half an hour |
| A．To keep the balance of the facility. | B．To make the best of limited spaces. |
| C．To decorate current parking spaces. | D．To prevent cars from being stolen. |
In the little village of Meadowbrook, surrounded with rolling hills, lived two curious and adventurous twins, Sarah and Sam. At the age of twelve, the inseparable twins were always seeking new adventures.
One morning, Miss Harper, their favorite community service teacher, was introducing community volunteer work. Sam suddenly caught sight of the hill behind the schoolyard and was instantly inspired with the idea of climbing to the top.
“Sarah, ”whispered Sam, “Wouldn’t it be splendid if we climbed to the top of that hill today?It’s said to hold breathtaking views of our beloved village. ”
Hearing that, Sarah’s face lit up with excitement, her heart filled with eagemess. “Oh, Sam, that sounds great!But we promise Papa and Mama we will save our pocket money and not spend a single penny unnecessarily. ”With determination in their hearts, the twins worked out a plan. They decided to bring homemade snacks and refreshing drinks from their own kitchen, ensuring they wouldn’t spend a penny.
The twins set off on their journey, their backpacks filled with sandwiches, cookies, and bottles filled with cool, clear water from the village well. As they walked along the path, they noticed colorful trash scattered (散落) about, which ruined the natural beauty surrounding them.
A brilliant idea flashed into Sarah’s mind. “Why don’t we pick up the litter along the way?We could clean up our beloved countryside and maybe even earn a few coins by recycling the materials. ”
Excited by the idea, the twins eagerly collected the scattered items. As they reached the foot of the hill, their bags heavy with the collected waste, they came across a recycling center. With excitement, they exchanged their findings for shiny coins. With newfound treasures in their pockets, they climbed up the hill.
When they reached the top, they were greeted by a breathtaking view of their village. “It’s so beautiful!”Sam burst out,” We must share our adventure with Miss Harper and our classmates!”
The next morning, Sarah and Sam returned to school, eager to meet Miss Harper.
The following weekend, the entire class started to clean up their beloved village.
When a tiny glass frog sleeps, its body becomes so transparent that it almost cannot be seen. The frog’s glass-clear skin makes no shadows. Even the red blood disappears. It’s an unusual trick—most see-through animals live in water all the time, which don’t produce red blood cells.
But when the frogs are active, blood begins to flow again, forming a pattern of bright red that can be seen. So, scientists set out to discover what happens to all that blood.
In a new study, researchers found out how, while sleeping, a glass frog sends most of the red blood cells to its liver(肝脏). In the process, the liver grows in size by about 40% to accommodate the extra cells. Like its heart and some other organs, the frog’s liver is covered in a mirrored part, which reflects lights, that helps the frog hide itself from enemies.
“If these frogs are awake, stressed or under anesthesia(麻醉), their blood systems are full of red blood cells, and they are not transparent,” explains an expert. “The only way to study transparency is when these animals are happily asleep, which is difficult to achieve in a research lab.”
Luckily, there is an imaging technology which can check red blood cells without breaking the skin of frogs. The team used this technique on frogs while they were sleeping. They found the animals moved a shocking 89% of their red blood cells to their livers while sleeping.
How exactly these frogs can pack their red blood cells together without getting blood clots (血栓) remains a mystery. Most other animals’ blood becomes very thick if the cells bump into each other, which can help cure a wound or—in a worse situation—stop blood from flowing to important areas. Understanding more about how the frogs stay healthy while jam-packing their livers with red blood cells could help advance blood clot research in humans.
1．Why are the glass frogs unusual?| A．They are very tiny. |
| B．They can be nearly invisible. |
| C．They live in the water all the time. |
| D．They don’t produce red blood cells. |
| A．It takes in lights. | B．It expands in size. |
| C．It gets blood clots. | D．It functions like a heart. |
| A．To stop blood from flowing. |
| B．To check the red blood cells. |
| C．To measure the frogs’ movement. |
| D．To put the frogs to a proper state for study. |
| A．Blood clots cause many deaths for humans. |
| B．Scientists have learned the secret of glass frogs. |
| C．Further study will probably be made on glass frogs. |
| D．Packing red blood cells together is harmful to animals. |
Abdul Holik’s walk to school is anything but ordinary. The eight-year-old was born with a physical disability that resulted in his feet and legs severely deformed (变形). Each day, he has to make his way through steep paths and rocky surfaces with a pack tied to his back and his hands slipped into a pair of sandals (拖鞋).
His mother, Pipin, remembers when Abdul begged to send him to school. He desired to learn to read and be like everyone else. She was confused at first because she wasn’t sure which school would take him in. Finally she found a school located six kilometers away that accepted Abdul despite his limitations. Pipin thought it was impossible for her son to attend the school as there are no bus services at their small village. But the family was determined. They taught Abdul to walk on his hands. At first, Pipin would accompany Abdul to school every day but now he makes it himself. When the rainy season arrives, the road is slippery and dangerous. On days like that, his parents try to use motorcycle taxis, which depends on whether they have the money to spare. If there is no money, Abdul continues his crawl (爬行) to school by hand.
At school, Abdul’s principal Epi sees huge potential in Abdul. “We see he can follow along in the classroom just fine and he has no problems socializing with others,” said Epi. His teachers describe him as a child with enthusiasm and effort in schoolwork. Despite his limitations, Abdul is active in extracurricular activities, especially in sports.
He wants to attend university in the big city. His dream is to become a firefighter because he wants to help people in need. He has other ideals, namely becoming a doctor. For him, the goal is also to help other people, especially those who experience pain.
Abdul continues to struggle for his dreams. His love for life and learning has given him the opportunity to go far and his support system is pushing him further into his bright future.
1．What was Pipin’s initial concern about Abdul’s schooling?| A．Limited family budget. |
| B．Lack of available transportation. |
| C．A long distance from their village. |
| D．Uncertainty of school admission. |
| A．Abdul’s teachers think highly of him. |
| B．Abdul’s disability ruined his schooling. |
| C．Abdul walked to school himself in the past. |
| D．Abdul spends more time on sports than schoolwork. |
| A．Active and honest. |
| B．Humorous and optimistic. |
| C．Confident and adventurous. |
| D．Determined and enthusiastic. |
| A．Abdul’s dream of helping people in need. |
| B．Abdul’s inspiring journey in persuing education. |
| C．The challenges in Abdul’s daily life at school. |
| D．The struggles of Abdul’s family for supporting his studying. |
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