1 . A group of small, waggling (扭动) robots that communicate by flashing lights can make collective decisions. This is similar to the process bees use to reach an agreement on where to build their nest.
“We believe that in the near future there are going to be simple robots that will do jobs that we don’t want to do, and it will be very important that they make decisions on their own,” says Carmen Miguel at the University of Barcelona in Spain. She and her team tested how copying bees might help with that.
When bees go house-hunting, they communicate their preferred locations through a “waggle dance”. The more a bee recommends one location, the longer and harder it waggles. Eventually other bees join them, and they reach an agreement when a majority are waggling together. Researchers previously translated this behavior into a mathematical model, and Miguel and her colleagues used it to program decision-making rules into small robots called kilobots.
Each kilobot with three thin legs had an infrared-light emitter (红外线发射器) and receiver, and a colored LED light. Within a group, kilobots could move around, turn clockwise or anticlockwise and use infrared signals to exchange information.
Ezequiel Ferrero at the University of Barcelona says that across all the experiments, kilobots reached an agreement within about half an hour, even when they didn’t have many immediate neighbors to communicate with. He says that getting the right combination of how long they spend transmitting their message and how much they walk around allowed them to make a collective decision in the end.
1. What’s Miguel’s attitude to the development of kilobots?A.Worried. | B.Confident. | C.Uncertain. | D.Unconcerned. |
A.By giving out a special smell. | B.By moving around repeatedly. |
C.By doing a waggle dance energetically. | D.By flashing light for a long time. |
A.They put kilobots before real bees. |
B.They equipped kilobots with thin legs. |
C.They built a special mathematical model. |
D.They programmed decision-making rules into kilobots. |
A.Bees are expert in waggling. |
B.Robots learn waggle dances by copying bees. |
C.Waggle dances mean a lot in communication. |
D.Robots reach an agreement by copying bees waggling. |
2 . I grew up hiking and climbing mountain s a lot. It was my dad who accompanied me and taught me how to hike and climb mountains. On our first hike, our group ran ahead without us. Dad and I ended up
When we were close to the top, we
When we finally reached the top and
A.losing | B.discovering | C.approaching | D.conquering |
A.easiest | B.smoothest | C.toughest | D.narrowest |
A.down | B.up | C.ahead | D.out |
A.safety | B.wisdom | C.strength | D.bravery |
A.speed up | B.go on | C.turn back | D.look down |
A.came across | B.made out | C.got through | D.got across |
A.red | B.pale | C.rough | D.dirty |
A.aimlessly | B.fearlessly | C.tirelessly | D.breathlessly |
A.heights | B.mountains | C.difficulties | D.accidents |
A.look up to | B.hold onto | C.listen to | D.respond to |
A.replaced | B.separated | C.surrounded | D.covered |
A.cheer | B.look | C.put | D.pick |
A.rejoined | B.reintroduced | C.revisited | D.rearranged |
A.regretful | B.relieved | C.upset | D.inspired |
A.time | B.message | C.decision | D.lesson |
1. What time does the restaurant open every day?
A.At 8: 00 a. m. | B.At 9: 30 a. m. | C.At 10: 00 a. m. |
A.Her daughter. | B.Her husband. | C.Her sister. |
A.One by the window. | B.One in the corner. | C.One near the door. |
A.The restaurant serves varieties of Japanese foods. |
B.The woman’s reservation is for this Sunday. |
C.The restaurant is famous for its vegetable dishes. |
1. How many cafes are there in the central business area of Tianhe district?
A.More than 1,000. | B.Over 500. | C.About 50. |
A.The coffee beans are roasted very deep. |
B.It combines TCM ingredients. |
C.It is prepared by hand. |
A.Disappointing. | B.Satisfactory. | C.Just so-so. |
Dora Kellert was the school’s spelling bee champion, winner of the reading contest at the public library three summers in a row and the playground grand champion in chess. She was a straight-A student.
Though Dora was talented, she was no good at sports. She could not figure out in which direction to kick the soccer ball. She was no good at baseball or basketball either. It wasn’t until last year, when she was eleven years old, that she learned how to ride a bike. And even then she had to use training wheels.
“I’ll never be good at sports,” she thought one day as she lay on her bed staring at the shelf her father had made to hold her trophies (奖杯). “How I wish I could win something, anything, even marbles (弹珠).”
At the word “marbles,” she sat up, “That’s it. Maybe I could be good at playing marbles.” She jumped out of bed and found a can full of her brother’s marbles. “Yes,” she thought. “I could play marbles, and marbles is a sport.” At that moment she realized that she had only three weeks to practice. The playground championship was coming up. She had a lot to do.
To strengthen her wrists (腕关节), she decided to do twenty push-ups on her fingertips, five at a time. By the end of the first set she was breathing hard. She did one more set and decided that was enough push-ups for the first day. She squeezed (握) a rubber eraser one hundred times, hoping it would strengthen her thumb (大拇指). This seemed to work because the next day her thumb was painful. She could hardly hold a marble in her hand, so Dora rested that day and listened to her brother’s tips on how to shoot.
After school the next day she practiced three hours straight. After practice, she squeezed the eraser for an hour. Practice, practice, practice. Squeeze, squeeze, squeeze. Dora got better and even beat her brother for the first time.
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2.请按如下格式在相应位置作答。
Time flew and soon came the big day.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Dancing home, she placed the trophy on the middle of the shelf.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Dominic Richard loves cycling. In 2023, he ordered a new bike from a factory in Shanghai and flew there
Richard cycled through cities and countries, taking in the sights along the way. He started in Shanghai, where after successfully picking up his new bike he began the journey. Considering all the possible challenges, he travelled light. The bike
Fortunately, after the
7 . Grainne lived alone. My morning routine
She was an easy conversationalists, with a good habit of focusing
We both looked forward to my daily
The day before I left Dublin, I went to say goodbye to Grainne. We both knew we were likely talking to each other in person for the
Shortly after my return to India, my grandfather
Although I was never able to
A.cope | B.contrast | C.correspond | D.communicate |
A.conversations | B.arguments | C.expectations | D.competitions |
A.helpfully | B.initially | C.traditionally | D.entirely |
A.asking | B.teaching | C.telling | D.offering |
A.live | B.fit | C.differ | D.appear |
A.schedules | B.thoughts | C.needs | D.visits |
A.refused | B.remembered | C.decided | D.hesitated |
A.next | B.same | C.last | D.right |
A.gave up | B.passed away | C.turned over | D.pulled out |
A.respected | B.connected | C.alone | D.guilty |
A.news | B.treat | C.adventure | D.sympathy |
A.future | B.people | C.time | D.experience |
A.trust | B.find | C.comfort | D.see |
A.beautiful | B.commercial | C.secret | D.pretended |
A.fall behind | B.make sense | C.slow down | D.take effect |
Whenever Abigail opened the door to her aunt’s place for an after-school visit, she was greeted with the sight of her 3-year-old niece, sitting on the floor drawing with crayons. “She’s obsessed (着迷的),” said her aunt.“Gosh, I’m envious of a 3-year-old then,” Abigail thought to herself.
Every day, rubbing the sleep from her eyes, Abigail would go over to look at herself in the mirror, thinking the same thing: I am just so…ordinary. It all started once she entered middle school, where her grades in all subjects were OK but not great, and she couldn’t sing or dance that well, or play sports. She wasn’t even good at making jokes as she was so shy. As she continued to go down the same mind spiral (漩涡) of “you’re not good enough, what kind of job could you get in the future being someone so ordinary?”, she checked the clock and rushed out the door to get to school on time.
Along the way, she saw Peter and Sally walking ahead of her. Two of the class’s top students, they were just so smart and dedicated. Peter always stayed behind after math class to continue working on the equations (方程式). He was, like her niece was with drawing, obsessed and talented.
A few mornings later in class, something seemed a bit off with Abigail’s teacher, Mr Fry. He was normally quite active, moving quickly from the whiteboard to the podium (讲台) to explain some new knowledge points. But that morning, Abigail noticed that he seemed slower, not very with it. Then, as he asked the students to copy down a math equation, Mr Fry began shaking and then started to fall. Immediately, Abigail rushed from her sea t in the fourth row, managing to catch him just in time. He had fainted. “Someone go get the head teacher now!” yelled Abigail in a loud, clear voice. Fifteen minutes later, Abigail and her classmates watched out the classroom window at Mr Fry being wheeled across the parking lot on a stretcher (担架) to be put into an ambulance.
After two weeks off, Mr Fry was back, entering the classroom again to a round of applause from the students. His presence brought a sense of relief and normalcy to the room, easing their worry about his sudden illness.
注意:1. 所续写短文的词数应为150左右;
2. 请按如下格式在答题卡的相应位置作答。
As soon as the lunch bell rang, Mr Fry pulled Abigail aside.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________“Extraordinary”, the word echoed in Abigail’s mind as walked home from school that day.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________According to one legend, dumplings first appeared during the Han Dynasty.
10 . Big Stuff
Do you know what is the tallest building in the world and where the tallest Ferris wheel is? Have you heard of the world’s steepest roller coaster? Have you seen the biggest monster truck? Here are some of the most huge things on Earth.
A Towering Achievement
Burj Khalifa, a tower in Dubai, United Arab Emirates, is the world’s tallest structure. The 162-story building, which opened in 2010, stands over 2,717 feet tall. Seen from above, the tower has a Y-shaped design. Its three tall, narrow wings are joined in the middle. Like the legs of a tripod (三脚架), each wing is supported by the other two.
A Wheel Winner
About 15 miles from the world’s tallest building stands the world’s tallest Ferris wheel, Ain Dubai. Also called an observation wheel, Ain Dubai stands 820 feet tall. Each of the 48 cabins can carry 40 people for spectacular views of Dubai, United Arab Emirates. Before construction, support columns had to be driven 115 feet down through the earth to reach bedrock.
Extreme Ups and Downs
The world’s tallest roller coaster is Kingda Ka at Six Flags Great Adventure. At 456 feet, the peak of the ride towers over nearby Jackson, New Jersey. A 500-foot-tall crane was needed to place the final section at the top. Like many weight-bearing structures, the tower makes use of the most stable geometric (几何的) shape, the triangle.
A Monster of a Truck
Designed and built by business owner Bob Chandler, Bigfoot 5 has held the record for the world’s biggest monster truck since 1986. Other trucks, including Bigfoot models, have been designed to perform better in competitions. But Bigfoot 5 still stands above the crowd, thanks to its 10-foot-tall tires. The tires were originally designed for equipment that drives on Alaska’s snowy tundra.
1. What do Burj Khalifa and Ain Dubai have in common?A.They have similar structures. |
B.They are located in the same city. |
C.They are designed by the same architect. |
D.They are intended for visitors to overlook the views. |
A.Ain Dubai has a Y-shaped design. | B.Other trucks perform better than Bigfoot 5. |
C.Kingda Ka takes advantage of the triangle. | D.Burj Khalifa can carry 40 people for spectacular views. |
A.Business. | B.Lifestyle. | C.Entertainment. | D.Advertisement. |