People around the word felt excited on the night of April 10, 2019. For the first time in history, people saw a photo of a black hole. The photo became popular at once. But do you know it has something to do with a computer scientist Katie Bouman. Without her, there won’t be this photo.
Black holes are very far from us, so it is very difficult to take photos of them. It’s like taking a photo of an orange that is on the moon. Many scientists had tried. However, none of them succeeded.
These failures didn’t stop Bouman from trying. Several years ago, she started working on a special computer program. During the part years, she has improved the program many times. Finally, it turned telescope data (望远镜数据) into a photo of a black hole.
Bouman has received lots of praise because of her work. The young woman, however, is modest. She said the success mainly depends on her team. “None of us could do it alone,” she said.
Would you like to make history as Bouman did? Set a goal for yourself and work hard at it. Maybe you will make it come true in the future.
1. When people saw a photo of a black hole for the first time, they felt very ________.| A．sad | B．excited | C．surprised | D．calm |
| A．Because it is too big for us. | B．Because it is too far from us. |
| C．Because it is too dark to see. | D．Because it is as small as an orange. |
| A．By taking a photo of an orange carefully. |
| B．By working on a special computer program. |
| C．By turning telescope data into a photo of a black hole. |
| D．By using more advanced cameras with the help of others. |
| A．A surprising photo | B．A great photo of a black hole |
| C．Make your dream come true | D．A photo of a black hole and Katie Bouman |
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【推荐1】In the universe, as we all know, there is the sun, the moon, the earth and many stars. Through our geography lessons, we know the earth goes around the sun, and the moon goes around the earth. We have day and night because the earth keeps turning all the time. When our part of the earth turns to the sun, it is day. When our part of the earth turns away from the sun, it is night.
Just because the moon is closer to the earth than the sun, it looks much bigger than the sun. Big things look smaller when they are further, and small things also look bigger when they are nearer.
The sun is big enough to give out very strong light. The moon can’t give any light at all, but it looks quite bright, too. Why? In fact, the light from the moon comes from the sun. The moon looks much bigger and brighter than the stars, but actually the stars are much bigger and brighter than the moon. They look smaller than the moon also because they’re further away from the earth than the moon.
We all know that at 9:00 a. m. on October 15th, 2003, Chinese astronaut Yang Liwei went to space. He stayed there for 21 hours. It was the first time for Chinese to get into space. Then in the following years, more and more people get into space. I hope I will go to space one day.
1. When our part of the earth turns to the sun, it is ________.| A．day | B．night | C．evening | D．Sunday |
| A．smaller; closer to | B．smaller; further from |
| C．bigger; closer to | D．bigger; further from |
| A．快速的 | B．必须的 | C．寂静的 | D．明亮的 |
| A．On November 16th, 2003. | B．On October 16th, 2003. |
| C．On November 15th, 2003. | D．On October 15th, 2003. |
【推荐2】European researchers say they have created a process that can produce oxygen from moon dust. The process could provide a major source of oxygen for humans taking part in moon exploration activities in the future. Researchers from the European Space Agency（ESA）carried out the experiments and reported their results in a study.
The team says ESA’s experimental “plant” was able to successfully produce oxygen from simulated moon dust. The dust is part of a material known as regolith, which holds about 45 percent oxygen. However, the oxygen’s form is very strange, so it is hard to produce.
ESA’s long -term goal is to design an oxygen -producing “pilot plant” to work fulltime on the moon. Beth Lomax of the University of Glasgow was a lead researcher on the project. “Being able to get oxygen from resources found on the moon would certainly be hugely useful for future lunar settlers,” she said.
The researchers reported that the process also produced some usable metal materials. ESA researcher Alexandre said the finding that a number of metals are left behind was an important discovery.
ESA and the U. S. space agency NASA are both working on plans to return human beings to the moon. NASA has set a goal for 2024, with the aim to keep humans on the moon for long periods.
Word Bank simulated仿造的；mineral矿物质；regolith月壤； lunar settlers月球移民；moon dust月尘； |
根据材料内容选择最佳答案。
1. How will the process do good to humans according to the study?
| A．By creating warm air for researchers on the moon. |
| B．By providing rocks for the production of minerals. |
| C．By testing the weight of the oxygen in the moon dust. |
| D．By offering oxygen for people doing some research on the moon. |
| A．The quality is poor. | B．The size is small. |
| C．The form is uncommon. | D．The weight is heavy. |
| A．To show the history of ESA’s pilot plant. |
| B．To show the importance of ESA’s study. |
| C．To tell the plan of ESA’s research. |
| D．To present the process of ESA’s experiment. |
| A．ESA has discovered new materials on the moon. |
| B．ESA and NASA plan to land man on the moon again. |
| C．NASA will send more astronauts to the moon in 2024. |
| D．NASA and ESA will make a study together on the moon. |
| A．A movie poster. | B．A picture book. |
| C．A travel guide. | D．A science magazine. |
【推荐3】In the universe, there is the sun, the moon, the earth and many stars. Through our geography lessons, we know the earth goes around the sun, and the moon goes around the earth. We have day and night because the earth keeps turning all the time. When our part of the earth turns to the sun, it is day. When our part of the earth turns away from the sun, it is night.
Just because the moon is closer to the earth than the sun, it looks much bigger than the sun. Big things will look smaller when they are further, and small things also look bigger when they are nearer.
The sun is big enough to give out very strong light. The moon can’t give any light at all, but it looks quite bright, too. Why? In fact, the light from the moon comes from the sun.
The moon looks much bigger and brighter than the stars. But actually（事实上）the stars are much bigger and brighter than the moon. They look smaller than the moon also because they are further away from the earth.
There are many other planets in the universe. But of all the planets, only on the earth there are living things and people can only live on the earth, too. But at 9:00 a. m. on October 15th, 2003, Chinese pilot Yang Liwei was sent up to space. He stayed there for 21 hours. It was the first time for Chinese to get into space.
1. When our part of the earth turns away from the sun, it is _________.| A．night | B．day | C．windy | D．Sunday |
| A．bigger; farther | B．smaller; closer | C．bigger; closer | D．smaller ; farther |
| A．the earth | B．Mars | C．the moon | D．the sun |
| A．On November 15th, 2002. | B．On October 16th, 2003. |
| C．On May 15th, 2004. | D．On October 15th, 2003. |
| A．an interesting novel | B．a magazine about fashion | C．a popular play | D．a book about nature |
However，one of the most famous scientists has a very dark warning for us about this type of technology.
“The development of full artificial intelligence could lead to the end of the human race,” said Professor Stephen Hawking to the BBC.
Hawking is a well-known British Physicist and writer of bestselling science book A Brief History of Time. This warning came from a serious disease called ALS; he needs an AI computer to communicate. The computer learns how Hawking thinks and suggests the words he may want to use next.
This is a basic type of AI, which is very useful, yet Hawking fears the possibility of creating technology that can match or go beyond human intelligence. And it’s easy to imagine how terrible things may be. Many TV shows and films display big, killer machines that are far cleverer than us. “Humans, who are limited by slow biological evolution(进化), couldn’t compete, ” said Hawking.
But not every scientist is pessimistic(悲观的)about AI technology. “I believe we will remain in charge of（掌控) the technology. “ The potential(潜力)of it to solve many of the world problems will be realized.” In what direction do you think AI is going? Should we be hopeful or fearful?
1. Which of the following is TRUE about AI？
| A．The technology is not very popular now. |
| B．Scientists haven’t controlled the technology. |
| C．It is now much smarter than humans. |
| D．It makes our lives easier. |
| A．explain how AI has helped us |
| B．show the great hidden use of AI |
| C．show AI has already become part of our life |
| D．suggest that AI become dangerous for humans |
| A．AI: a friend or an enemy? |
| B．The development of AI |
| C．The future of human beings |
| D．The fight between humans and AI |
【推荐2】Many doctors say sleep can change our health. If we want our bodies to work well, we need sleep. If people don’t have enough sleep, they can suffer from depression and illness such as heart disease.
The most obvious(明显的) effect of not having enough sleep is to make us weaker and it makes it harder to fight illness. In other words, people who do not sleep enough are more likely to get sick or ill.
Studies in the USA have found that 60 percent of the adults often have sleep problems. Among them, more than 20 percent say that they feel sleepy in the daytime and that makes their lives difficult. At least 40 million people in the USA suffer from sleep problems that need treatment, but very few of them actually go to a doctor about it.
So what are the things that affect sleep? Well, firstly, there is noise. If there are noises such as barking dogs, dripping(滴水) taps or loud music, you will probably find it difficult to sleep. What is interesting is that women seem to notice more than men, while young children do not notice noise so much as adults.
If you are sitting on a chair, you will find it very difficult to sleep. But you will probably have no problem falling asleep if you are on a bed. This is another thing that affects sleep. We need to be horizontal and we need to have enough space.
A third thing affecting sleep is temperature. You may have noticed that you have difficulty sleeping if it is very hot or cold.
Altitude can change the way we sleep as well. If you are at an altitude of over 4,000m, you need to breathe differently because you don’t have as much oxygen. It will take you about two weeks to get used to this.
If you want to sleep well, please do not exercise before you go to bed or drink coffee. We hope this helps. Sleep well!
1. According to the passage, if you don’t have enough sleep, the most obvious effect is ________ easily.| A．to forget things | B．to get angry | C．to gain weight | D．to become ill |
| A．20% | B．40% | C．60% | D．80% |
| A．the mother | B．the father | C．the four-year-old daughter | D．the seven-year-old son |
| A．on a chair a cold room | B．on a chair in a warm room |
| C．on a bed in a warm room | D．on a bed in a hot room |
| A．age | B．height | C．weight | D．length |
| A．Shopping guide | B．Healthy life | C．Business Center | D．Sports news |
【推荐3】As we know, the desert covers large areas of the earth. In the desert, there is very little rain and it is very hot in the day and so cold at night. If you are a hiker or driver through the desert, it might be wise to know what you should do in order to survive（生存）in the desert.
Drink a small amount of water every hour. If you find a small piece of land where the earth is wet, dig deep to look for water. Another method of getting water is to cover a green plant with a plastic bag. As it breathes, the water vapor（蒸汽）will be collected inside the bag. Little by little, you can collect enough water to drink.
Plan to travel at night and sleep during the day, if you find you have to survive in the desert for a period of time. If you can find any shade in the desert, use it as a shelter（庇护所）to protect you from the strong sunlight.
Wear clothing in light color. It may seem like you'll be cooler if you wear that kind of clothes, which actually helps your body to become cool and helps protect you from sunburn.
Prepare to signal planes passing overhead if you are caught in the desert. During the day, keep a smoky fire burning and at night, a bright, clean burning one. Spell out the word SOS on the ground as large as you can using whatever materials you can find. In this way, you are more likely to be saved.
1. Which is a good way to get water in the desert?| A．To put the rocks together. |
| B．To dig deep into the wet earth. |
| C．To hang a plastic bag under a green plant. |
| D．To make a fire on the dry ground. |
| A．it’s better to wear a white coat than a black one |
| B．if you are in trouble, you should make a smoky fire at night |
| C．we shouldn’t travel at night because we can’t see clearly |
| D．we can’t find any shade as a shelter |
| A．What’s the Weather Like in the Desert? |
| B．What Should We Wear in the Desert? |
| C．How to Survive in the Desert. |
| D．Ways to Enjoy Yourselves in the Desert. |
【推荐1】Eight years ago, Chinese skater Wu Dajing introduced himself to the skating world by winning a silver medal at the Sochi Olympic Winter Games. At the year of 2018’s Pyeong Chang Olympics, Wu not only returned, but also made history.
On Feb 22th, 2018, Wu won the gold medal in the man’s short-track 500-metre race. He set a new world record with a time of 39.584 seconds. He also became the first Chinese man to take home an Olympic short-track gold medal. BBC said Wu’s win was “flawless”, because he was much faster than all of the other skaters.
“I didn’t give them a chance and I kept my speed from the start,” he told the media after the match.
But China’s short-track teams didn’t do well in general at the Games. Chinese skaters in the woman’s 500 meters, 3000-meter relay and man’s 1500 meters all failed to take home the gold. Wu was China’s biggest hope, which put a lot of pressure on him. But he proved himself with his great performance.
Wu is now known as a highly talented skater. But things were not always that way. When Wu joined the national team in 2010, he was seen as almost “nothing” compared to gifted skaters like Zhou Yang and Fan Kexin, as his coaches said at the time. Their comments made him quite upset. But as the saying goes, “Winners never quit and quitters never win”, Wu didn’t want to give up and worked as hard as he could. He practiced skating all year round. He even didn’t return to his hometown for the holidays for 10 years. “I believe in myself,” he told the media after his match at the Olympics.
1. What does the underlined word “flawless” mean?| A．Ordinary. | B．Valuable. | C．Perfect. | D．Difficult. |
| A．Wu won a gold medal at the Sochi Olympic Winter Games eight years ago. |
| B．Wu broke the world record with a time of 39.584 seconds and made history. |
| C．Wu’s coaches placed great hope on him when he joined the national team. |
| D．Chinese skaters in woman’s 500-meter, 3000-meter relay took home the gold. |
| A．From Zero to Skating Hero |
| B．The Dream of a Skater, Wu |
| C．Pyeong Chang Winter Olympics |
| D．Rising of China’s Bright Skiing Star |
【推荐2】
 | Artemis is the world’s fastest walking humanoid(人形的) robot. It stands at 142 cm and weighs 38 kg. It was the work of researchers from the University of California Los Angeles. The team plans to show off Artemis’s full abilities at an international robotics competition this July. |
 | Meet Pearl My name’s Pearl. Yes, I’m a Chihuahua. I’m a two-year-old girl. They say I’m shorter than a television remote control. Am I? And am I also about the same length as a U.S. dollar bill? Well, anyways, they say I’m now the shortest living dog in the world. Not bad to have my own world record! Woof, Woof! |
 | 3D-Printed Cake, Anyone? A 3D printer could soon become the next must-have household appliance. Scientists have successfully used it to make the world’s first 3D-printed cheesecake. The cake was made of seven edible(可食用的) food “inks”. While 3D food printing is still in its early stages, it will probably change the way we prepare and enjoy food. |
| A．Magic World | B．Science and Technology |
| C．Strange Study | D．Guinness World Records |
| A．Soccer is Artemis’ Favorite. | B．The Newest Walking Humanoid Robot. |
| C．Watch Out, ARTEMIS is Here. | D．Who Can Win the Game, Human or AI? |
| A．Because it’s Pearl’s favorite toy. | B．Because it’s a good comparison. |
| C．Because Pearl wants to buy one. | D．Because Pearl is good at using it. |
| A．Pearl is the same length as a U.S. dollar bill. |
| B．Artemis has showed its full abilities to the world. |
| C．The shortest Chihuahua in the world is less than 38 cm. |
| D．The 3D printer will greatly change the habits people cook. |
| A．Lovely and delicious. | B．Realistic and expensive. |
| C．Amazing and special. | D．Completed and enjoyable. |
【推荐3】In 1987, a small company named Huawei was started in Shenzhen. After more than 30 years of development, the company has now beaten Apple and become the world’s second-largest maker of smartphones behind Korea’s Samsung.
But two years ago, Huawei faced some difficulties. The U.S. government ordered a ban（禁令）on its sales in America. American officials said Huawei collected information for the Chinese government. At the same time, the U.S. government planned to stop selling parts and services to Huawei. It was believed that Huawei’s business would be hurt.
“We have never tried to get into other systems to collect information, and our government has never asked us to do so.” Ren Zhengfei, Huawei’s founder and president said. “This ban from the U.S. would have little effect on our company. Huawei can solve the problems.” Ren added.
In an interview several years ago, Ren Zhengfei said, “I stated Huawei with only £4,000 at the beginning, but now it has become a S100 billion company. The experience was not as easy as you imagine.”
Facing the ban, Huawei is growing. Huawei’s smartphone sales around the world rose 50 % compared to a year earlier in the first three months of 2019. At the same time, sales from both Samsung and Apple fell. So far, Huawei has grown into the world’s largest telecommunications equipment（电信设备）supplier, selling in 170 countries! Huawei will do its best to be the largest smartphone maker in the future.
1. According to the passage, which company is the largest maker of smartphones?| A．Apple. | B．Samsung. | C．Huawei. | D．Nokia. |
| A．Huawei stopped selling parts and services to the U.S. |
| B．Huawei refused to supply services to the U.S. government. |
| C．They didn’t want Apple to sell parts and services to Huawei. |
| D．They said Huawei collected information for the Chinese government. |
| A．will close down in a few days |
| B．has got into the system of the U.S. |
| C．can solve the problems they are facing |
| D．is asked to collect information for China |
| A．事实 | B．影响 | C．因素 | D．条件 |
| A．Huawei is full of hope. | B．Huawei’s sales will be doubled. |
| C．Huawei will grow slowly. | D．Huawei is the largest smartphone maker. |
