1 . Blind people have long desired for brightness, but scientists don’t have the technology. To bring that one step closer to reality, Zhiyong Fan, a materials scientist of the Hong Kong University of Science and Technology, developed a new artificial eye recently. The device, which is about as sensitive to light and has sharper vision and a faster reaction time than a real eyeball, may outperform human eyes.
The human eye owes its wide field of view and clear eyesight to the retina (视网膜) — an area at the back of the eyeball covered in light-detecting cells. The design for a new artificial eye is based on the structure of the human eye and uses a friendly light-sensitive material. At the back of the eyeball, an artificial retina is lined with Nan scale light sensors (纳米级光感器). Those sensors measure light that passes through the lens (晶状体) at the front of the eye. Wires attached to the back of the retina send signals from those sensors to the processor, similar to the way nerve networks connect the eyeball to the brain.
“In the future, we can use this to replace damaged human eyes,” says the lead designer. In theory, this artificial eye could see more clearly than the human eye, because the artificial retina contains about 460 million light sensors per square centimeter while a real retina has about 10 million light-detecting cells per square centimeter. Besides, the artificial eyeball records changes in lighting faster than human eyes can — within about 30 to 40 milliseconds, rather than 40 to 150 milliseconds. Although its 100-degree field of view isn’t as broad as the150 degrees a human eye can take in, the device can see as well as the human eye in poor light.
Hongrui Jiang, an electrical engineer at the University of Wisconsin, though, thinks engineers need a much more practical and efficient way to produce vast series of tiny wires on the back of the artificial eyeball to give it superhuman sight, which is super hard to achieve.
1. Why does Zhiyong Fan develop the artificial eye?| A．To replace people’s real eyeballs. | B．To gain a sharper vision. |
| C．To help the blind regain their eyesight. | D．To help normal eyes perform better. |
| A．The design of the artificial eye. | B．The structure of the human eye. |
| C．The advantages of the artificial eye. | D．The material used for the artificial eye. |
| A．They have the same structure. |
| B．The artificial eye may see more clearly. |
| C．The human eye sees better in weak light. |
| D．The artificial eye takes in a broader view. |
| A．Doubtful. | B．Favorable. | C．Unconcerned. | D．Satisfied. |
2 . Do you love food? Whether you’re a foodie or someone who just likes eating, there is so much to choose from. We know that too much of the wrong kind of food can be bad for our health, but for some people having a food allergy means eating certain things can actually be harmful — and now, it seems, this is affecting more and more of us.
An allergy is caused by the immune system fighting substances in the environment, known as allergens, that it should see as harmless. Food allergies can cause life-threatening reactions, which means people have to spend their lives following strict dietary restrictions and worrying about the ingredients of everything they consume. Allergy specialist Dr. Adam Fox says “if you look back over, say, 30 or 40 years...there are much more allergic problems around now than there were. ”
We often hear about people having allergies to dairy products and to peanuts. Last year a 15-year-old girl died after suffering a fatal allergic reaction from eating a baguette containing sesame seeds. This led to a call for better food-labeling laws.
Research has found that this problem is particularly affecting children. More and more of them are having allergic reactions to certain foodstuffs. Writing for the BBC website, Dr. Alexandra Santos from King’s College London says “food allergy now affects about 7% of children in the UK and 9% of those in Australia, for example. Across Europe, 2% of adults have food allergies. ”
So what might be the cause? Dr. Santos says the increase in allergies is not simply the effect of society becoming more aware of them and better at diagnosing them; it seems to be more environmental. She says possible factors are “pollution, dietary changes and less exposure to microbes, which change how our immune systems respond.” She points out that it’s very common for migrants who move to another country to develop asthma (哮喘) and food allergies in their new location.
A lot of work is being done to try and find a cure, but that’s not easy. So for now allergy sufferers. must watch what they eat and they must rely on clear and accurate labeling.
1. What do food allergy sufferers usually have to do before eating?| A．They need to bring their own food. | B．They have to call for an accurate labeling. |
| C．They have to ask the seller about the goods. | D．They have to look at the ingredients. |
| A．Because she has had a bad baguette. |
| B．Because she has had some sesame seeds directly. |
| C．Because the sesame seeds she had isn’t the right one. |
| D．Because she has had something containing sesame seeds. |
| A．Lily, a girl in a preschool. | B．Lucy, a freshman in a company. |
| C．John, a researcher in an institution. | D．Peter, an old man working on a farm. |
| A．Pollution. | B．Dietary changes. | C．Exposure to the air. | D．Microbes. |
3 . At noon, I would race breathlessly home, a ten-minute walk from my school. My mother was waiting for me with pleasure to have lunch while I shared what happened at school.
I had been picked to be the princess in the school play, and for weeks my mother had rehearsed (排练) my lines so hard with me. But no matter how easily I acted at home, hardly had I stepped on stage when every word escaped me. Finally, my teacher asked me to change to a narrator’s (解说员) part. Her word. kindly expressed, still hurt, especially when I saw my part go to another girl.
I didn’t tell my mother what had happened that day. But she sensed my pain. Instead of suggesting we practice my lines, she asked if I wanted to walk in the yard.
Under the rose vine, we could see yellow dandelions (蒲公英), as if a painter had touched our landscape with shades of gold. I watched my mother casually bend down by one dandelion. “I’m going to dig up all these weeds, she said, pulling it up by its roots.” From now on, we’ll have only roses in this garden. ”
“But I like dandelions,” I argued. “All flowers are beautiful-even dandelions.”
My mother asked thoughtfully, “Yes, every flower gives pleasure in its own way, doesn’t it?” I nodded, pleased I had won her over. “And that is true of people too,” she added. I burst into tears, a mixture of relief and regret swelling up as I told her what had happened.
“But you will be a beautiful narrator,” she said, encouraging me as she did. “The narrator’s part is important, too.” Composing myself gradually, I began to accept the narrator’s part. Then came the performance day. I was still nervous, but it was at that very moment that I found a dandelion in my pocket. It was obvious that my mom secretly put the flower there, which magically gave me confidence.
1. What made the author feel hurt?| A．She got changed to the narrator’s part. | B．She disliked the previous role. |
| C．She totally forgot the lines. | D．She lacked practice at home. |
| A．She wanted to know what happened to the author eagerly. |
| B．She insisted on the author practicing the lines there. |
| C．She tried to make the author realize every role counted. |
| D．She wanted the author to dig out all the dandelions. |
| A．Sympathetic but strict. | B．Curious and easy-going. |
| C．Passionate but anxious. | D．Understanding and wise. |
| A．Actions speak louder than words. | B．Every individual can make a difference. |
| C．Constant dripping wears away a stone. | D．All that glitters is not gold. |
4 . Our planet is an amazing place, but it needs our help to thrive! That’s why each year on April 22, more than a billion people celebrate Earth Day to protect the planet from things like pollution and deforestation. You can celebrate and protect the planet at the same time.
Become a waste warrior
The number of garbage trucks Americans fill each year would stretch halfway to the moon. Toilet paper tubes, made from cardboard, take two months to decompose in a landfill. A plastic bottle sticks around for way longer and
Plant a tree
It might seem like it’s everywhere, but clean, drinkable water is a limited resource. In fact, less than one percent of the water on Earth can be used by humans. (The rest is either too salt y or too difficult to access. ) Turning off the faucet when you brush your teeth can conserve up to eight gallons of water a day.
Offer your time
With a parent’s permission, volunteer to pick up trash at a nearby park, start a collection drive for recyclable items, or organize a screening of an environmentally themed movie.
The more people do, the better off our planet will be!
| A．Turn off the light |
| B．By getting involved and working with others |
| C．it can take over 450 years to break down |
| D．Limit your water usage |
| E．To help save even more water, challenge yourself to take a shorter shower |
| F．Check out these Earth Day ideas to help save the planet any time of year |
| G．Researchers estimate roughly 15 billion trees in the world are cut down each year |
5 . When two ninth-graders discovered smoke storming out of their school bus early Tuesday morning, their bus driver knew just what to do. Thanks to her
When
Having
| A．careful | B．timely | C．kind | D．adequate |
| A．avoided | B．shown | C．saved | D．claimed |
| A．launching | B．transporting | C．inviting | D．walking |
| A．gas | B．water | C．smoke | D．heat |
| A．reported | B．shouted | C．flashed | D．radioed |
| A．sharply | B．casually | C．shortly | D．regularly |
| A．found out | B．turned out | C．put out | D．cut out |
| A．huge | B．wide | C．fast | D．urgent |
| A．amazed by | B．satisfied with | C．disturbed by | D．concerned about |
| A．received | B．sent | C．refused | D．accepted |
| A．simple | B．pure | C．quiet | D．single |
| A．praised | B．encouraged | C．elected | D．prohibited |
| A．sure | B．fond | C．ashamed | D．proud |
| A．managed to | B．expected to | C．intended to | D．convinced to |
| A．guide | B．angel | C．pilot | D．teacher |
| A．investigated | B．scanned | C．instructed | D．stimulated |
| A．controlled | B．fixed | C．ordered | D．caused |
| A．shelf | B．wires | C．trunk | D．brake |
| A．run | B．think | C．stand | D．look |
| A．sweet | B．reliable | C．sound | D．tidy |
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词;
2. 只允许修改10处，多者(从第11处起)不计分。
Today we experienced enjoyable period of English class as usually. As soon as the bell rang, our teacher began to divide us from several groups to do the writing. After we knew when to do next, we set out to held a discussion immediately. Some students shared their ideas about the main point s while others added the detailed informations. Then we finished it quickly. Comparing to the compositions of the other groups, our is better. Whenever I passed by the Learning Garden on the back wall of our classroom in this week, our composition catch my eyes, reminding me of the excellent team work of our group.
It’s common to see a barista create coffee art (咖啡拉花), but
Over the past six years, the 40 year old Shanghai artist
Han has been
With his increasing input to the art, Han quit his job at the games company in 2019 and has been spreading dian cha culture ever since. He put the process of dian cha
The Class Poet(诗人)
When Thanksgiving Day was approaching (临近), my primary school decided to celebrate(庆祝 ) by presenting shows with dancing and singing that all students could join in. Parents would also be invited to watch.
One afternoon, my teacher called me into his office. He said with a smile, “Nancy, could you write a poem (诗) and read it during the coming event?” “Of course,” I answered excitedly. I had loved poetry since fifth grade. When my first poem was published, my friends and teachers started to describe me as the class poet.
I left the schoolmaster’s office that afternoon feeling quite happy. Then, for weeks, I worked on my poem, carefully designing the content, structure and sound. I practiced reciting(朗诵)it aloud every day.
When the evening for the event finally came, I was ready. Well, I was ready until I looked around and realized how many people there were in the school hall. How could I present my poem in front of more than 400 people? I was just a seventh-grader. No one would take my work seriously. What was worse, I had never spoken in front of a huge crowd before. I sat in my chair, wanting to bury(隐藏) myself. Maybe they would forget I was supposed to read.
“Hey, Nancie, I saw your name in the program. Good luck,” my little brother shouted. His voice rose as he took his seat a few rows (排)down with his class. I nodded (点头), struggling to keep calm. I knew my parents were somewhere in the hall. Before long, the lights faded (暗下来), the crowd went quiet, and the schoolmaster got on stage to introduce the list of performers. My name was at the end of the list, so I had to sit through an hour of absolute anxiety.
It wasn’t until the students from the fourth grade were singing that my teacher led me downstairs to the area next to the stage. My mind was blank (空白的). Then suddenly, I was on stage with the bright white lights blinding (使眼花) my view of the audience. When I walked to the microphone in the center of the stage, I somehow tripped (绊倒) over something and stupidly fell down. All of the kids burst into laughter.
注意：1. 续写词数应为 150 个左右;
2. 请按如下格式在答题卡的相应位置作答。
I was about to run away when my teacher came up to me
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________When I finished my reading, the hall was silent at first.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________1. What do you always keep doing?
2. Why and how do you keep doing that?
注意：1. 词数：100词左右(结尾已给出，不计入词数);
2. 可以适当增加细节，以使行文连贯。
One Thing I Keep Doing
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________That’s all. Thanks for your listening!
10 . It could happen anywhere at any time. It’s often unexpected, but almost never unappreciated. Most people have been on the receiving a random act of kindness—the moment when a complete stranger stops to offer aid, generosity or compassion. In a sometimes cold world where people can be so focused on what they’re doing, a random act of kindness can make all the difference.
They can be relatively insignificant. Hannah Bailey from London, for example, told the Metro newspaper about how she was given her fruit and vegetable shopping for free. The seller did her a kindness when it emerged she didn’t have any change to pay. She was happy about it all day.
The city of Naples has long had a tradition called “caffe sospeso”. When buying coffee, a person who has recently been lucky would purchase two cups but only drink one, leaving the second one out of the goodness of their heart, for a poor person to claim for free. This tradition is now more common worldwide.
However, in some cases, these little acts can be a matter of life and death. Take, for example, the unnamed commuter, who in June 2018 fell off a station platform onto an electric railway track in Toronto, Canada. A quick-thinking, but even now unknown, bystander selflessly leapt down to pull him to safety.
Or Jonny Benjamin, who in London in 2008 was persuaded not to commit suicide by a passer-by. He had been considering jumping from a bridge. He later found the Good Samaritan and thanked him. He may one day find a way to pay him back in kind—though that’s not the point.
So, why do it? Often, the acts aren’t paid back. The people never meet again. According to UK charity The Mental Health Foundation, acts like these can “give our lives new purpose, show us other perspectives on our own problems and even make us feel euphoric. ”
So give it a try. Hold open a door for someone, deliver a compliment even give up your seat on a bus. Help someone who is in need. It takes all kinds. It needn’t be anything huge. One day, whether you need it or not, someone might help you in your hour of need.
1. How did Hannah Bailey feel after she received a random act of kindness?| A．She was pleased about it for the rest of the day. | B．She was shamed about it all day. |
| C．She wanted to pay back the money. | D．She thought it insignificant. |
| A．It is wasted after the man left. | B．It is left at the cafe to be donated to a poor person. |
| C．It is for the commuter only. | D．It can only be drunk at the cafe shop. |
| A．They help us earn more money. |
| B．They can add up some good reputation to us. |
| C．They give our lives new purpose and a feeling of pleasure. |
| D．They make problems for us. |
| A．Ambitious. | B．Sorrowful. | C．Awkward. | D．Delighted. |
