Venus (金星) is close to Earth.
Scientists have been learning about Venus for a long time. First, they looked at Venus through telescopes (望远镜). But Venus is covered with thick clouds.
For a long time, scientists thought that Venus had water and plants. They thought Venus might have animals, too.
| A．Then scientists found a way to learn more about Venus. |
| B．It is the second planet from the Sun. |
| C．The scientists learned a lot from the probes. |
| D．But they didn’t know for sure. |
| E．Scientists could not see Venus well through the clouds. |
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【推荐1】What do black holes look like? We finally got the answer: They look like dark circles with a bright ring around the outside. Scientists took the world’s first photo of a black hole. The black hole is very far from the Earth—about 55 million light years away. This is not the only black hole in the universe.
Black holes are mysterious in the universe. A photo can help us learn more about them. How much do you know about black holes? Try to answer the following questions.
Q: What is a black hole?
A: A black hole comes from a dying star. The star turns into a small point. The point has much mass and strong gravity. The strong gravity of a black hole pulls things. The black hole “eats” these things. Black holes can even “eat” light. That’s why a black hole looks “black”.
Q: If black holes are “black”, how do scientists know they are there?
A: We cannot see black holes. But we can see how their strong gravity works on the things around them. A black hole’s gravity pulls dust and gas into it. And if a star is orbiting a point in space, scientists can study the star’s orbit. They can tell if the star is orbiting a black hole.
Q: How did scientists take the picture of the black hole?
A: Scientists didn’t use a camera to take the picture. They used eight radio telescopes in different places across the world. The telescopes got information from the black hole. Scientists used computers to deal with the information. It took them two years to get the final picture.
Q: Will the sun turn into a black hole? And if it does, will it “eat” the Earth?
A: The sun won’t become a black hole. According to NASA, it does not have enough mass to turn into one. When the sun dies, it will become a smaller and cooler star. Even if the sun becomes a black hole, the Earth would still be safe.
1. Which of the following is NOT true about black holes?| A．They look like dark circles with a bright ring around the outside. |
| B．They are about 55 million light years away from the Earth. |
| C．Black holes look “black” because they pull light and “eat” it. |
| D．Scientists say that there is more than one black hole in space. |
| A．moves | B．adds | C．touches | D．plants |
| A．using cameras to take pictures |
| B．using radio telescopes around the world |
| C．watching the stars carefully in the sky |
| D．watching the shape and color of the sun |
| A．The Earth will die at once. |
| B．The Earth will become black. |
| C．The Earth will still be safe. |
| D．The Earth will become a cool star. |
| A．Learning about black holes |
| B．The Earth and the black holes |
| C．Something about the universe |
| D．The sun and the Earth |
【推荐2】In the universe, as we all know, there are 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.
Just because the Moon is closer to the Earth than the Sun, it looks much bigger than the Sun.
The Sun is big enough to give out very strong light.
| A．There are many other planets in the universe. |
| B．Big things will look smaller when they are farther. |
| C．The Moon can’t give any light at all, but it looks quite bright, too. |
| D．When our part of the Earth turns to the sun, it is day. |
| E．They look smaller than the Moon also because they are farther away from the Earth. |
| F．Astronauts have already been to the moon. |
Our Milky Way Galaxy may be home to 2 billion planets that have the right conditions to support life. These planets have the correct temperature for liquid water. While no one knows what alien life would look like, if it is anything like life on earth, it would need water to keep alive. According to the research, there are nearly 2 billion habitable planets in the Milky Way Galaxy, which is just one of 100 to 200 billion galaxies in the universe.
The earth was formed 9 billion years after the Big Bang. Many of the planets in the Milky Way were formed millions and some even billions of years before the earth. If intelligent life had existed on any of these planets, they would be much more developed than humans. With that much time to develop the technology for space travel, we should have been visited by aliens many times.
So where is everyone? Some people believe that aliens have visited earth many times, and some governments of the world might have known very well. some believe that we have also been visited many times in the ancient past. They point to the Egyptian pyramids or the huge heads of Easter Island. They say that there was no way that ancient humans were able to create these structures without alien assistance.
According to Harvard professor Avi Loeb, . For example, in 2017, a cigar-shaped object came within 33 million km of the earth as it passed through our solar system. It was named Oumuamua, which means “messenger from the distant past reaching out to us” in Hawaiian. Loeb says that its unusual shape and the fact that it sped up as it left our solar system sets it apart from anything else we’ve seen. He thinks it was a probe sent by an alien civilization. Jackie Fairey, says everyone should have reservation about this. She is one of many scientists who say there are more reasonable explanations for Oumuamua. That hasn’t stopped Professor Loeb. He has written a new book on Oumuamua called Extraterrestrial: The First Sign of Intelligent Life Beyond Earth.
1. According to the passage, if there were aliens, they ________.| A．could be similar to humans on the earth |
| B．must help build the Great Wall |
| C．would be smarter than humans on the earth |
| D．have a shorter history than humans |
| A．we hasn’t been visited by aliens for we got nothing from the universe |
| B．we not only have been visited by aliens, but also have evidence |
| C．no one could be sure about whether the evidence we’ve got is true |
| D．all of researchers doubt about the fact that we have been visited |
| A．there are fewer than 100 billion habitable planets in the universe |
| B．some aliens did actually, and on the earth in ancient times |
| C．some governments received information from the oumuamua |
| D．scientists Leob doesn’t agree with the idea that Fairey holds |
| A．Where are all the aliens? |
| B．When will the aliens visit us? |
| C．Oumuamua: Have you ever been here? |
| D．How many habitable planets are there? |
Little birds talk with their sisters and brothers in their nest. They make a sound for food. Mum tells them to be quiet when danger comes. But now a new study finds that kind of talk begins long before the babies are born. Even in the eggs, they can talk with each other and know when to get out or when to keep waiting.
To check that finding, a team of scientists from Spain watched unborn birds carefully in Salvora Island. Over there, sea birds produce eggs and minks eat baby birds. So it is quite a dangerous place for baby birds. Knowing when to come out of the egg is a matter of life and death.
Scientists collected sea bird eggs and put them into two groups. When minks come, a parent will give warning calls to the baby birds. Scientists played those calls for one group. While the other group stayed in a safe box. They would never hear such calls.
When scientists put all the eggs together, they found something surprising: after receiving warning calls, the eggs vibrated more than the others. Those vibrations moved from one egg to another. It was just like there were ears in the eggs. It was clear that unborn birds talked with their sisters and brothers about danger.
1. This passage is mainly about ________.| A．a magic egg | B．a wild animal | C．a new study | D．a huge box |
| A．check when birds begin talking | B．protect the sea birds in danger |
| C．take photos of beautiful sea birds | D．know when birds get out of eggs |
①collected bird eggs ②played warning calls ③put eggs together ④put eggs in group
| A．①→②→③→④ | B．①→④→②→③ |
| C．②→①→④→③ | D．②→①→③→④ |
| A．Birds in Danger | B．Love from Eggs |
| C．Nature for Birds | D．Talk in the Eggs |
【推荐2】Why did Chinese people have more than one name in ancient （古代的） times? How did two men call each other when they met on the street? Keep reading and it will help you have a better understanding about the names of ancient Chinese people.
In ancient China, people’s names had three parts, family name, given name and courtesy name. This is very different from other countries. Let’s take Li Bai, a famous poet（诗人） in Tang Dynasty（朝代）, as an example. His family name was Li from his father. His given name was Bai, and his courtesy name was Taibai.
People used their given names when they were among family members. But when they were out, they called each other by their courtesy names to show respect（尊重）. This was mostly done among people of similar age. If you were talking about yourself, or if your elders were talking about you, the given name would be used instead of the courtesy name.
Men would get their courtesy name when they turned 20. It was a symbol of adulthood (成年). Women would get their courtesy name after getting married.
One’s courtesy name often had something to do with the given name. For example, the name of Mencius was Meng Ke. His courtesy name was Ziyu. Both Ke and Ziyu mean “carriage（马车）”. Zhuge Liang’s given name was Liang, which means “bright”. His courtesy name was Kongming, which means “very bright”.
根据材料内容选择最佳答案。
1. How does the writer start the text?
| A．By telling stories. | B．By asking questions. |
| C．By giving suggestions. | D．By giving examples. |
| A．名 | B．姓氏 | C．字 | D．昵称 |
| A．To show their love. | B．To show they were good friends. |
| C．To show their kindness. | D．To show their respect. |
| A．At the age of 18. | B．At the age of 20. |
| C．After he was born. | D．After he made a new family. |
| A．Three parts of ancient names in China. |
| B．Some famous people in ancient China. |
| C．The different names in China. |
| D．The names in different countries. |
If you have only three minutes to get something that you can take from your home, and the other things will be lost forever, what will you take? The following information will help you.
| B. O. B. | B. O. B. is short for Bug of Bag（求生背包）. It’s a bag with a collection of things that are needed for life in it. |
| Reasons to use a B. O. B. | When disasters（灾难）like earthquakes and heavy rainstorms happen, many people will have to run away from their homes and they may not return for a long time. They need to continue to live without food, water or shelter in some unexpected situation. |
| Things in a B. O. B. | A sleeping bag, or at least a thin quilt. Drinking water, high-calorie foods, such as chocolate and biscuits. Necessary medicines. Sometimes for making a fire and a small pot to boil water or cook. A few basic tools like a knife and some ropes. A flash light. Money. A copy of all your important papers.（Be sure to make a B. O. B. as light as possible.） |
| Places to keep A B. O. B. | You should put a B. O. B. at a place where you can get it conveniently when disasters happen. Your home, your car, or your office can be a good place to put it. |
| A．for research | B．for traffic | C．for study | D．for life |
| A．they have to save other people’s lives |
| B．they will be able to return in a short time |
| C．they need to continue to live after disasters happen |
| D．they have no other useful things to take |
| A．light | B．heavy | C．common | D．huge |
| A．in the car | B．at home | C．at the office | D．on the road |
| A．Expensive things should be put in a B. O. B safely at first. |
| B．People should take a B. O. B with them everywhere. |
| C．It’s better to prepare more than one B. O. B if possible. |
| D．People are advised to put some more clothes in a B. O. B. |
