题型：阅读选择 题类：常考题 难易度：普通
牛津深圳版九年级下册Module2 Environmental problems Unit 4 Natural disasters同步练习
Our sun is a star, and nine worlds (天体) move round it. Worlds like these are planets. But here 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.
Would you like to go to the zoo at night? Last month, Shanghai Wild Animal Park opened its night safari(夜间观赏)for the first time. You can see animals in the dark. Some animals enjoy the night—they are nocturnal(夜行的)animals. Who are they?
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| Bats They are good at flying through the dark to catch insects(昆虫).They give out sounds and listen for the returning echoes (回声)to find their way around. |
| | Owls Their eyes look like tubes (管子) . They have good hearing. They can fly quietly. All of these help them find food easily. |
| | Frogs Frogs get up to sing at night in spring and summer. They do this to find a partner. An active night life also helps them to stay safe. |
| | Hedgehogs By day, hedgehogs sleep. At night, they begin to look for food. They use their ears and noses to find food. |
| | Leopards Leopards like to travel around and look for food in the dark. |
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