Mercury is the closest to the sun. It is very hot on Mercury. The planets that are far away from the sun are very cold. Venus is between Mercury and the Earth. It is sometimes called Earth’s “sister planet” because they have almost the same size and shape. The Earth is the planet where we live. From space, the Earth looks blue because it has so much water. Jupiter is the largest planet in our solar system. Saturn is known for having rings around it. Uranus was the first planet discovered with a telescope. We can see Venus, Mars, Jupiter, and Saturn with our eyes, however, to see Uranus, we need a telescope. Neptune is the 8th planet in our solar system. The planet is farthest from the sun.
Probes (探测仪) go into space and take pictures of the planets. We learn a lot from these pictures. If you could send a probe to any planet, where would you send it?
1. What goes around the sun?
| A．Moon. | B．Stars. | C．Spaceships. | D．Planets. |
| A．Mercury. | B．Venus. | C．Jupiter. | D．Saturn. |
| A．cold | B．hot | C．small | D．bright |
| A．潜水镜 | B．显微镜 | C．高台 | D．望远镜 |
| A．Earth is the second closest planet to the sun. |
| B．Jupiter is larger than any other planet in our solar system. |
| C．Uranus is famous for having rings around it. |
| D．We can’t see Mars with our eyes. |
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【推荐1】Our sun is a star, and nine worlds (天体) move round it. Worlds like these are planets. But there are other stars, other suns, not only thousands of them, but millions of them. Do different stars have planets? We can see the planets round our own sun. but we haven’t been anymore. The stars are too far away from us. Stars give out light, but the planets don’t have any light of their own. So we can’t see them. They are too far, and too dark. Still, we can tell that some stars have planets. While a big planet goes round, it pulls its star to one side. And sometimes we can see this. Then we know that the star has a planet. For example, Barnard’s Star is a small red star. And it is the quickest star in the universe. But sometimes it moves slower, and then quicker again. We have known Bernard’s Star for many years, and now we are sure it has a planet.
1. A star is a large body in the universe. It _________.| A．moves round our sun | B．has light of its own |
| C．can also be called a sun | D．both B and C |
| A．The earth is one of the sun’s world’s |
| B．There are millions of suns in the universe |
| C．The worlds are very bright |
| D．some stars have planets |
| A．nine worlds in the universe |
| B．the planets round other stars |
| C．the satellites round the earth |
| D．other stars |
| A．most stars | B．any other star |
| C．its planet | D．the planets round the sun |
| A．Sometimes they see that the planet pulls the star to one side and makes it move slower. |
| B．The planet is shining |
| C．The planet is next to our earth. |
| D．The planet is a red one. |
【推荐2】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 (行星).
For scientists, the finding is not an end. Next, they will try to find out if the planets have atmospheres
| A．That seems too far away from us. |
| B．They all nearly have the same size as Earth. |
| C．These are big questions in the science world. |
| D．It means there could be liquid water on them. |
| E．The seven planets are very close to one another. |
【推荐3】We want to explore and try to better understand the world in which we live. Space exploration (探索) is one of the ways. Through the exploration of space, we can begin to unravel the mysteries of our universe and to better know our living environment.
Space exploration provides us with knowledge about the beginning of our solar system (太阳系), our own planet and ourselves. It also helps answer the questions that have puzzled us for many years. Solar system exploration is important because it is good for us.
Space technology has become an important part of our daily lives. Some technology uses satellites (卫星) to communicate. Satellites are also used to examine the changes in the Earth’s climate (气候) and seas, for weather report and for military (军事). We also use satellites in food production. Because of the use of space technology in crops, fewer and fewer people will suffer (受苦) hunger.
The space program provides a chance for nations to work together. The cooperation (合作) promotes (促进) peace and understanding between governments and their people. Many governments have taken part in the space technology, including the United States, Russia, Japan, the European nations and India. In the near future, other nations will take part in it. In fact, the United States remains the leader in new space technology.
1. The underlined word “unravel” in the first paragraph means “________” in Chinese.| A．解开 | B．描述 | C．相信 |
| A．Difficulties in space exploration. |
| B．The advantages of space exploration. |
| C．The answers to the questions of space exploration. |
| A．reporting the weather |
| B．examining the changes of seas |
| C．changing the climate of a certain place |
| A．The United States | B．Russia | C．Japan |
| A．Poor countries don’t agree to explore space. |
| B．People in different countries have different ideas on exploring space. |
| C．More and more countries will take part in the space program. |
