Unit 3 第1课时 Comic strip & Welcome to the unit（分层练习）-2023-2024学年九年级英语下册同步精品课堂（牛津译林版）

Unit 3 Robots 第1课时 Comic strip & Welcome to the unit 分层练习 一、根据首字母填空 词汇填空 1．I’m (投诉) about you to the robot shop 2．Please help me (回答) to the letter. 3．Christopher Columbus was one of the (探索) to discover America. 4．Would robots have (大脑) in the future? 5．You can do (任何) you want to do. 二、翻译句子。 6．我正在写一封投诉信向机器人商店投诉你。 7．我不知道何时替你把这封信寄掉？ . 8．将来机器人会有大脑吗？ . 9．他们能做他们被要求做的任何事。 10．他们能做像扑灭大火或从事高层建筑这些危险的工作。 ? 11．机器人能在任何方面帮助我和你吗？ ? 三、阅读单选 When you look up into the sky at night, have you ever felt that your eyes are deceiving you? It seems that stars are moving all the time. Actually, there’s nothing wrong with your eyes. This twinkle (闪烁的) effect is called scintillation (闪烁现象). Scintillation happens because of air movement in the earth’s atmosphere (大气). Light is “bent (弯曲)” when it travels through different parts of the earth atmosphere. As the air in the earth’s atmosphere is moving all the time, the light traveling through the atmosphere makes the stars look as if they are moving, too. The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, you will see that the image (影像) in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water. This twinkling effect causes a lot of problems for astronomers (天文学家), because they cannot observe the stars clearly. So, a telescope was needed in space so that the air movements in the atmosphere could be av