Named after the “quest for heavenly truth”, Tianwen 1, China’s first Mars probe（探测器）, has given us impressive pictures of the red planet. The first high-resolution（高分辨率的）pictures of Mars taken by Tianwen 1 were made public by the China National Space Administration（CNSA） on March 4.
“These are the first close-up pictures of Mars’ surface taken by China, ” said Bao Weimin, a scientist of the Chinese Academy of Sciences.
The pictures were taken at different distances from Mars. The two black-and-white pictures were taken by the high-resolution camera on Tianwen 1 when the probe was about 330-350 kilometers above the Martian surface. As for the color picture, it was taken by Tianwen 1’s medium-resolution（中分辨率的）camera when the probe was about 5, 000 kilometers above the red planet. It shows Mars’ North Pole.
The high-resolution camera can take both color and panchromatic（全色的）pictures. Panchromatic pictures, which are black and white, are the clearest, having the largest amount of data for scientific study, said Liu Tongjie. The medium-resolution camera, can only produce lesser clear pictures. Scientists put the panchromatic and color pictures together to form a clear and beautiful color picture, Liu added.
Tianwen 1, the country’s first independent Mars task, was sent up on July 23, kicking off the nation’s planetary exploration program. The probe entered its preset orbit above Mars on Feb 24 and is looking for a landing site on the planet’s largest plain. The probe is expected to land on the red planet sometime between May and June.
1. When were the first high-resolution photos of Mars made public by CNSA?| A．On Feb 24. | B．On March 4. | C．On July 23. |
| A．The color picture. | B．The black-and-white picture. | C．The clear and beautiful picture. |
| A．The first close-up pictures of Mars’ surface were taken at different distances from Mars. |
| B．The color pictures have the largest amount of data for scientific study. |
| C．The clearest pictures were taken by the medium-resolution camera. |
| A．Tianwen 1 will take more pictures of Mars. |
| B．Tianwen 1 will land on the red planet, Mars. |
| C．Tianwen 1 will do some scientific research on Mars. |
相似题推荐
Are we alone in space? Is the Earth the only planet that has life?
On Feb. 22nd, NASA said they found seven Earth-like planets.
For scientists, the finding is not an end. Next, they will try to find out if the planets have atmospheres（大气层）.
| A．It means there could be liquid water on them. |
| B．That seems too far away from us. |
| C．These are big questions in the science world. |
| D．The seven planets are very close to one another. |
| E．They all nearly have the same size as Earth. |
China Builds Beidou
On May 17, 2019 China launched a new satellite at the Xichang Launch Center (西昌卫星发射中心). It was the forty-fifth Beidou satellite that China had sent into space.
So what is Beidou?
Beidou is a positioning system (定位系统). It is developed by China. China is the third country in the world to have its own positioning system. With Beidou, China no longer has to depend on foreign system. This is very important for national safety.
Work on Beidou began in 1994. However, the first two Beidou satellites were not sent into space until 2000. Since then, China has launched dozens of Beidou satellites. These satellites have formed a global network. Now, China is further improving the system. It plans to launch ten more Beidou satellites. If all goes well, Beidou will be completed before 2020.
The completed Beidou will be more powerful than any existing (现存的) positioning system. Yang Changfeng is a designer of Beidou. He says the system can notice the sway (摇摆) of a building in strong winds.
Beidou has brought many advantages to our lives. In Shanghai, thousands of buses have been using Beidou. When we are waiting for a bus, we can know when it is about to come.
Many smart phones have also been using Beidou. “Many people say, ‘Let me turn on my GPS.’ In fact, their phones are using Beidou,” jokes a salesperson in Beijing.
1. Where did China launch a new satellite on May 17, 2019?| A．At the Taiyuan Launch Center. | B．At the Jiuquan Launch Center. |
| C．At the Wenchang Launch Center. | D．At the Xichang Launch Center. |
| A．Two. | B．Three. | C．Forty-four. | D．Forty-five. |
| A．In1994. | B．In 2000. | C．In 2008. | D．In 2018. |
| A．Beidou is very powerful. | B．Many people have been using Beidou. |
| C．GPS can be more powerful than Beidou. | D．Few smart phones have been using Beidou. |
| A．Beidou system hasn’t been completed yet in 2019. |
| B．China used to depend on foreign positioning systems. |
| C．The completed Beidou system will have 45 satellites in all. |
| D．Beidou will be the most powerful positioning system in the world. |
【推荐3】What's a spacewalk? Any time an astronaut gets out of a spacecraft (航天器) while in space, it is called a spacewalk. Astronauts go on spacewalks for many reasons. For example, experiments can be placed on the outside of a spacecraft. This lets scientists learn how being in space affects ( 影响) different things. By going on spacewalks, astronauts can also fix things instead of bringing them back to the earth to fix.
When astronauts go on spacewalks, they wear spacesuits to keep themselves safe. Inside spacesuits, astronauts have the oxygen (氧气) they need to breathe and the water they need to drink. To keep the astronauts and the spacecraft safe, the astronauts must leave and go back to the spacecraft through a special door. When on a spacewalk, astronauts use safety tethers to stay close to their spacecraft. Tethers are like ropes, connect the spacewalkers with the spacecraft. They keep astronauts from floating (漂浮) away into space. Another way astronauts stay safe during spacewalks is by wearing a SAFER. SAFER is worn like a backpack. It helps an astronaut move around in space.
How do astronauts train for spacewalks? One way is by going for a swim. Floating in space is a lot like floating in water. Astronauts practice spacewalks underwater in a huge special swimming pool. For every one hour they will spend on a spacewalk, astronauts need to train seven hours in the pool. Another way astronauts practice for a spacewalk is by using virtual reality(虚拟现实). It looks and feels just like a spacewalk.
Today, only three countries have finished spacewalks independently. They are Russia, the United States and China. The first person to go on a spacewalk in the world was Alexei Leonov from Russia. Zhai Zhigang is the first Chinese astronaut to go on a spacewalk. The world record of spacewalks is held by Russian astronaut Anatoly Solovyev. He has been on 16 spacewalks and spent more than 82 hours outside in space.
1. About the spacewalk, we can know ____________.| A．some things can be fixed by astronauts during spacewalks |
| B．all experiments must be placed on the outside of a spacecraft |
| C．an astronaut can get out of a spacecraft any time while in space |
| A．It keeps an astronaut from floating away into space. |
| B．It helps an astronaut move around in space. |
| C．It helps an astronaut have the oxygen to breathe and the water to drink. |
| A．spacewalkers | B．tethers | C．spaceship |
| A．floating in space | B．using virtual reality | C．training in water in a common swimming pool |
| A．16hours | B．more than 80 hours | C．more than 82 hours |
【推荐1】Could you imagine cars driving without human drivers? Recently, China has made a big step toward self-driving technology. This August, more and more driverless taxis run on roads in many big cities in China.
Why do we develop self-driving cars? Self-driving cars give us many benefits. They use computers to sense the things around them and make better use of space. This means fewer traffic jams and better parking of cars. Many people cannot drive for various reasons, including age, disability, or lack of experience. Now, they can get around more easily. Driving becomes more convenient.
According to a research, each year, over 1.3 million people die in car accidents around the world, and many more get hurt. Self-driving cars can reduce (减少) road accidents by 90% and save a lot of money. The main cause of car accidents is human mistakes. By using computers, self-driving cars don’t make poor decisions or lose attention like humans do. They can improve driving safety.
But self-driving cars aren’t perfect. If something unexpected on the road happens, self-driving cars can’t react (反应) as fast as a human driver can. Also, during weather events like heavy snow, it will be difficult for self-driving cars to see the lines on the road. It might lead to an accident. The computer system in the car can also get hacked (非法入侵) by someone, causing it to crash.
It’s clear that there is a lot of work to do to make self-driving cars a common and safe sight on our roads. And China is taking the lead in making this happen.
1. Which of the following is a benefit of self-driving cars according to the passage?| A．They don’t need parking space. | B．They can teach people how to drive. |
| C．They allow disabled people to travel more easily. | D．They cost less money to make and repair. |
| A．Because they can correct human mistakes while driving. |
| B．Because their computers can predict all road accidents. |
| C．Because computers do not have attention problems. |
| D．Because they can see clearly even in bad weathers. |
| A．The weaknesses of self-driving cars. | B．The benefits of having a human driver. |
| C．How road accidents usually happen. | D．How the computers in self-driving cars work. |
| A．Many countries are working together to develop self-driving cars. |
| B．Self-driving cars need clean and safe roads to run. |
| C．We can already see self-driving cars everywhere in China. |
| D．China is trying to make self-driving cars safer and more common. |
Sophia is a robot in Saudi Arabia. She made history at a meeting
that was held in the country on Oct 25. On that day, she became the first robot in the world to get citizenship (公民身份).
In the future, Sophia may have the same rights（权利）as a human
(人类) Saudi Arabian citizen.
Sophia looks like a human woman. In 2015, a US company built
her and gave her an AI system (人工智能系统). This means Sophia can talk and act like a human. She also has the ability to learn from people, books and the Internet.
“I will do my best to make the world a better place,” Sophia said at the meeting. But not everyone is happy with Sophia’s citizenship. Some think robots like her could be dangerous. They could become enemies (敌人) of humans if they go out of control.
For this, Sophia said she was also clever and kind. “Don’t worry, if you’re nice to me, I’ll be nice to you,” she said.
1. Who is Sophia?
| A．She is a scientist. She invented a robot. |
| B．She is the same as a human woman. |
| C．She is a woman from Saudi Arabia. |
| D．She is a robot. She looks like a woman. |
| A．She got her name. | B．She was made into a woman. |
| C．She got citizenship. | D．She got the same rights as humans. |
| A．talk with people | B．control the whole world |
| C．learn from books or the Internet | D．do the same things people do |
| A．the robot doesn’t have citizenship |
| B．the robot is not as active as you think |
| C．the robot can be as nice as anyone else |
| D．the robot will treat you badly if you do bad things |
Ten, nine, eight, seven...With a shining flame (火焰) behind, the fifth Long March 5 Carrier Rocket with Chang’e 5 lunar probe took off at 4:30 am on Nov 24.
Because of this moon exploration (探月任务), Chang’e 5 is named after the Chinese moon Goddess Chang’e. Its weight is 8.2 tons which is an unbelievable amount to fly into the space.
Chang’e 5 has carried out the hardest task in its historical exploration program.
Besides the great increase in sample, Chang’e 5 landed on the northwest part of Oceanus Procellarum (风暴洋), where no probes have visited before. The samples got there might be 1.2 billion years old.
| A．On December 1st, it arrived on the moon. |
| B．So everyone wondered what had such a power to make it. |
| C．This will help fill in an important piece of the mysteries of the moon’s history. |
| D．It returned back with 2 kilograms of lunar samples of the moon successfully. |
| E．However, Long March 5, the strongest carrier rocket in China now, made it possible. |
| F．The great increase in sample weight has shown our county’s great progress in moon exploration. |
【推荐1】
| Whole Wheat (全麦粉) Apple Pancakes INGREDIENTS: 2 cups of whole wheat flour (面粉) 1/2 teaspoon of salt 2 eggs 1/4 cup of vegetable oil 2 large apples l cup of butter DIRECTIONS: In a large bowl, stir (搅拌) the flour and salt. Put eggs, oil and apples into the flour. Heat a large pan over medium heat. Put a large teaspoon of batter (面糊) onto the pan and cook until the batter becomes dry. Then flip the pancake and cook until it becomes brown on the other side. When both sides have a light brown color, the pancake is ready. Heat the butter over medium heat and add it to the pancake. It makes the pancake taste more delicious. |
1. The passage tells us how to make________.
| A．bread | B．dumplings | C．pancakes | D．hamburgers |
| A．1 cup. | B．1/2 teaspoon. | C．2 cups. | D．1/4 cup. |
| A．milk | B．salt | C．flour | D．butter |
①Put eggs, oil and apples in. ②Cook the batter. ③Add some butter.
④Stir the flour and salt. ⑤Heat the pan.
| A．③①⑤②④ | B．④①③⑤② | C．④⑤①②③ | D．④①⑤②③ |
| A．烘烤 | B．爆炒 | C．翻动 | D．切碎 |
In nature, the spring season is the beginning of a year. Trees begin to bud (发芽). Easter egg hunts are held in the springtime to celebrate the season. Rainy days help the growth of the flowers, grass and trees during the spring
Summer
For many students, summer is a time of relaxation and a break from schoolwork. The Fourth of July is celebrated in America with some outdoor activities. The long days of summer allow for lots of time with friends and family outside. Summer is a common season for thunderstorms (雷雨) that are both powerful and exciting to see.
Fall (Autumn)
The fall season brings colder temperatures and frost (霜). Some children enjoy trick or treating on Halloween night. Besides this, in the fall season there are animals that prepare for hibernation (冬眠) by eating a lot to store up enough body fat to live through the winter months.
Winter
Winter brings snow and ice for many people in the world. Most trees have lost all of their leaves. Evergreen (常绿的) trees are brought inside the house and set up for Christmas celebrations. Building snowmen is the most common winter activity.
1. Easter egg hunts are held in ________.| A．spring | B．summer | C．fall | D．winter |
①have a lot of homework②can see thunderstorms
③go trick or treating④play with friends outside
| A．①② | B．②④ | C．①③ | D．②③ |
| A．In spring | B．In summer | C．In fall | D．In winter |
| A．Swimming | B．Playing football. |
| C．Skating | D．Building snowmen |
| A．The spring season is the beginning of a year. |
| B．Halloween is in spring. |
| C．American people celebrate the fourth of July with some outdoor activities. |
| D．Evergreen trees are used for Christmas celebrations. |
【推荐3】Saihanba(塞罕坝) National Forest Park in Chengde used to be a famous hunting ground for the old royal families（皇家）, and is a mixed word of Mongolian and Chinese, which means a high mountain with good-looking scenery.
In the late Qing Dynasty, a lot of forest had been cut down and gradually turning large piece of forest into a complete dry land. After new China was founded, the Chinese government decided to reforest the area again and created the Saihanba Mechanical（机械的）Forestry Center in 1962. When the first 300 college volunteers reached the wild land, only a hard sand storm harshly welcomed them. From then on, the 3-generation forest workers dedicated（奉献）their whole lives to forest development and planting technology. 50 years later, the desert eventually transformed into a lush（葱翠的）forest. It’s honored to be the largest man-planted forest farm in the world.
Now the park has presented a new feature of forests and grasslands as well as more than ten lakes, which are so clean and clear, and will show you the charming and beautiful natural scenery. The area has more than seven hundred kinds of animals and plants. The best season for visiting the park is summer when the wide grassland being nearly all covered by golden flowers. It is an ideal place for touring, hunting and getting away from the summer heat of the big cities. Its beauty in the early 2000s drew attention of more than 500 thousand tourists. Now it’s doubled. Saihanba —-truly a sight to be seen.
1. Saihanba is a mixed word of name that means________________.| A．a place worth visiting | B．a large forest park |
| C．a beautiful and high mountain | D．a remote wild place |
| A．More trees had been grown. | B．It was developed as the hunting ground. |
| C．The royal families made it for training soldiers. | D．The old forests had almost turned to be a desert. |
| A．the government needed some wood. | B．more trees would be cut down there |
| C．they wanted to make a man-planted forest | D．a new touring place would open to the public |
| The young volunteers came to the poor land. | Great changes have taken place now. |
| A．They had a good time. | B．They just experienced an adventure. |
| C．They returned home some years later. | D．Many people spent 50 years working there. |
| A．Because it is green everywhere. | B．Because it is warm and beautiful. |
| C．Because it has forests and grassland. | D．Because the weather is cool and the scenery is beautiful. |
