Is there life on Mars (火星) ? We don’t know. We are sure that people on the earth can not live on Mars. Earth people can’t live without oxygen(氧气). There is little oxygen on Mars.
Living on Mars would be like living on a very high mountain. There would be little air. It may be 50℃ at noon and -100℃ at night.
Many people think there may be plants on Mars. We know that Mars has carbon (二氧化碳). This is kind of material (物质) found in all plants and animals on the earth. Mars looks red. In some places, it seems gray. Sometimes the gray color turns gray-green then brown, and then gray again. The gray-green color may be a kind of plant life changing color with seasons.
Will man go to Mars one day? If they do, they will have to take their own oxygen, food , clothing and shelter (住所) with them .
1. Which of the following you are sure doesn’t live on Mars?| A．Life. | B．Man. | C．Plant. | D．Carbon. |
| A．Because there is almost no oxygen. | B．Because it is too hot at noon. |
| C．Because it is too cold at night. | D．Living on Mars is like living on a high mountain. |
| A．Oxygen. | B．Earth. | C．Carbon. | D．Mars. |
| A．Its gray color. | B．Its gray-green color. |
| C．Its brown color. | D．The changing of its colors. |
| A．Some kinds of plants may live on Mars. |
| B．A little Oxygen is on Mars and it is not enough for earth people to live there. |
| C．We can live on Mars with the help of carbon. |
| D．There is always only one season on Mars. |
相似题推荐
【推荐1】Do you know anything about the Moon? How much do you know about it?
The Moon is an unfriendly place. There is no air or water. There are only lots of dust and mountains around on it.
But from the Moon, you can see our beautiful Earth. It is shining more brightly than the other stars in the dark.
| A．So there are no animals or plants there. |
| B．The Moon is also a very quiet world. |
| C．Do you want to go there? |
| D．You can take some photos with your camera. |
| E．When the Sun shines in the day, the temperature is very high. |
【推荐2】On May 15, 2021, China’s Tianwen Ⅰ probe (探测器) successfully landed on Mars (火星)! This was a very difficult job. Only the US has done it before Tianwen I’s long journey began in July 2020. It went into the orbit (轨道) of Mars in February. After lying around Mars for 3 months, it finally touched down on Mars.
The final landing was very dangerous. People call it the “nine minutes of terror (恐怖)”. The probe had to do everything by itself because the control room on Earth had no way to help it. It had to slow down from 20,000 km per hour to zero. How did Tianwen I do it?
1. What’s the best title of the text?| A．Flying around Mars | B．Making a hard landing | C．On Mars | D．On Earth |
| A．On May 15, 2021. | B．On August 15, 2021. | C．In July, 2020. | D．In February, 2020. |
| A．With the help of humans. | B．Through the control room. |
| C．On its own. | D．By making itself faster. |
| A．dangerous | B．easy | C．boring | D．interesting |
Three Chinese astronauts, Zhai Zhigang, Wang Yaping and Ye Guangfu, the core module（核心舱）of Tiangong space station, will work and live there for about six month.
The answer, of course, is yes, because the microgravity （微重力）conditions on the space station can help produce experimental results that are impossible to get on the earth. And cells in microgravity also grow different in space.
The universe （宇宙）is a treasure house for humans to explore.
| A．Are the costs worth it? |
| B．Living in space is actually expensive. |
| C．Is it true to live in the space station for such a long time? |
| D．A space station provides a place for the scientific exploration. |
| E．This has been the longest mission so far for Chinese astronauts. |
| F．Giving people deeper understanding of some basic life science processes. |
