Before the mid-2th century,
Beijing — Planetary scientists in China found hints of water “reservoirs (水库)” on the moon. Over billions of years, the surface of the moon
After looking into the glass beads from the sample, the international research team
3 . Mars is truly a fascinating planet for those of us here on Earth.
The Red Planet has the largest volcano in the solar system-Olympus Mons.
Mars also has an atmosphere, but it is very thin and made up mostly of carbon dioxide. Because of its thin atmosphere and greater distance from the Sun, Mars is much colder than Earth.
Scientists believe that studying Mars can help answer some of the key questions about our planet Earth, or even the universe.
| A．It is roughly 27 kilometres high. |
| B．Missions to Mars have never been easy. |
| C．Mars, however, today has no active volcanoes. |
| D．The temperature at the planet’s surface varies widely. |
| E．However, Mars does have weather, with clouds and winds. |
| F．China will continue to explore the mysteries of the universe. |
| G．It is one of the few planets that we can see with our own eyes. |
The Future Life on Mars
Compared with the life we
Firstly, without pollution on Mars, people will be able to drink cleaner water
5 . Edmund Halley was an English scientist who lived over 200 years ago. He studied the observations of comets which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems.
However, Halley had a friend named Newton, who was a brilliant mathematician. Newton thought he had already worked out that problem, but he could not find the papers on which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse.
Now Halley set to work. He figured out the orbits of some of the comets that had been observed by scientists. He made a surprising discovery. The comets that had appeared in the years 1531, 1607, and 1682 all had the same orbit. Yet their appearances had been 75 to 76 years apart.
This seemed very strange to Halley. The different comets followed the same orbit. The more Halley thought about it, the more he thought that there had not been three different comets, as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again.
It was an astonishing idea! Halley felt certain enough to make a prediction of what comet would happen in the future. He decided that this comet would appear in the year 1758. There were 53 years to go before Halley’s prediction could be tested. In 1758 the comet appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet has been called Halley’s comet, in his honor.
1. Halley made his discovery ________.| A．by doing experiments | B．by means of his own careful observation |
| C．by using the work of other scientists | D．by chance |
| A．1704 | B．1705 | C．1706 | D．1707 |
| A．Halley and other scientists | B．the orbit of a comet |
| C．Newton and Halley | D．Halley and his discovery |
| A．Edmund Halley was an American scientist. | B．Halley made his discovery by doing experiments. |
| C．Newton was a famous mathematician. | D．The orbit of a comet had the shape of a circle. |
6 . It is in human nature to explore new things. To that end, many countries have been exploring space for many decades, particularly the US, Russia, and countries in Europe.
President Xi Jinping praised the success of the Chang’e 5 mission (使命) in bringing back the country’s first samples (样本) collected from the moon. The whole country is proud of this breakthrough. The Chang’e 5 mission has achieved many significant breakthroughs, including China’s first lunar (月球的) surface sampling, first liftoff from the moon and the first spacecraft with the ability to gather and meet in lunar orbit with samples to re-enter the Earth s atmosphere.
The success of the Chang’e 5 mission marks a conclusion of China’s current lunar exploration project. The successful re-entry and landing of the Chang’e 5 capsule (太空舱) have enabled China to obtain its first lunar samples, marking a new start for lunar and planetary research. With this achievement, China sets a new milestone in space exploration.
No matter how far China goes into space, it always stays true to its original mission-uncovering the secrets of the universe and contributing to human’s peaceful use of space. China is a peace-loving country and will use its achievements for promoting peace around the globe.
China views these efforts as part of the world’s lunar exploration. It chose a different landing site and is promising to share its samples to enrich the planet’s knowledge. Some foreign scientists have shown particular interest. The exploration is not for commercial purposes, but international scientific research. Human beings shall explore the moon together, as it will finally need large projects requiring international cooperation. China will play a leadership role in the international scientific community.
1. What made Chinese people feel proud according to the passage?| A．Landing on the moon successfully. | B．Gaining admission to exploring the moon. |
| C．Strengthening the ability to promote the peace. | D．Bringing back first samples collected from the moon. |
| A．Horrible but romantic. | B．Fearful but successful. |
| C．Challenging but rewarding. | D．Dangerous but peaceful. |
| A．The original mission remains unchanged. | B．Countries join together to explore the moon. |
| C．China takes pride in the achievements in space. | D．China sets a new milestone in space exploration. |
| A．A poster. | B．A leaflet. | C．A newspaper. | D．A guidebook. |
7 . Why should mankind explore space? Why should money, time and effort be spent exploring and researching something with so few apparent benefits? Why should resources be spent on space rather than on conditions and people on Earth? These are questions that, understandably, are very often asked.
Perhaps the best answer lies in our genetic makeup as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments? The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible.
Nearly every successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects.
Exploration also allows minerals and other potential resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions. Knowledge or techniques have been acquired through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products (副产品) of technological developments in the space industry.
While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist.
While Earth is the only planet known to support life, surely the adaptive ability of humans would allow us to live on other planets. It is true that the lifestyle would be different, but human life and cultures have adapted in the past and surely could in the future.
1. Why does the author mention the questions in Paragraph1?| A．To express his doubts. | B．To compare different ideas. |
| C．To describe the conditions on Earth. | D．To introduce points for discussion. |
| A．Humans have the tendency to fight. | B．Humans are nature-born to do so. |
| C．Humans may find new sources of food. | D．Humans don’t like to stay in the same place. |
| A．The adaptive ability of humans. | B．Resources on the earth. |
| C．Our genetic makeup. | D．By-products in space exploration. |
| A．Space exploration has created many wonders. |
| B．Space exploration provided the best value for money. |
| C．Space exploration may help us avoid potential problems on Earth. |
| D．Space exploration may benefit science and technology. |
What will it be like to live on the moon?Volunteers
In January,four volunteers finished spending 200 days in the lab.Never
Life in Yuegong1 is busy.Volunteers get up at 8：30 am and go to bed at 11 pm.Growing food
The experiment will give scientists information that can be used to create better living areas for
