Unit 5 知识点 Section A 2a-2d 练习 2026-2027学年人教版九年级英语上册

九年级英语上册Unit5知识点-Section A 2a-2d练习 小试牛刀 A. 选用方框中的动词的适当形式填空（每个限用一次） design produce send read build up 1. The object is ________________ on the computer first. 2. A file is ________________ by the computer. 3. The file is ________________ to the 3D printer. 4. The file is ________________ by the 3D printer. 5. The object is ________________ by building up plastic layer by layer. B. 句型转换（改为一般疑问句并作肯定或否定回答） 1. The object is designed on the computer. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 2. The file is sent to the 3D printer. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 3. A 3D printer can make human arms and legs. 一般疑问句：_________________________________________________ 肯定回答：_________________ 否定回答：_________________ 配套练习 A. 单项选择（★） 从A、B、C、D中选择最佳答案。 1. What is the first step to create a 3D object? A. Send the file to the printer. B. Design the object on a computer. C. Build up plastic. D. Read the file. 2. Where is the file produced? A. By the 3D printer. B. By the computer. C. By hand. D. By a camera. 3. What happens after the file is sent to the 3D printer? A. The computer designs the object. B. The printer reads the file. C. The object is sent away. D. The plastic is melted. 4. How is the object built up? A. By cutting plastic. B. By building up plastic layer by layer. C. By painting. D. By gluing parts together. 5. Which of the following CANNOT be made by a 3D printer according to the listening (or common knowledge)? A. Toys. B. Human hearts. C. Houses. D. Fresh fruit. B. 完成句子（★★） 根据句子内容，用正确的词汇完成句子。 1. 物体是在计算机上设计的。 The object is ________________ on the ________________. 2. 文件由计算机生成。 A file is ________________ by the computer. 3. 文件被发送到3D打印机。 The file is ________________ to the 3D printer. 4. 文件被3D打印机读取。 The file is ________________ by the 3D printer. 5. 物体通过堆积塑料一层一层地建造起来。 The object is ________________ by ________________ up plastic. 拓展思考 写一段话（至少5句）介绍3D打印机的一项用途（例如制造玩具、假肢、房屋等）。说明你选择这个用途的原因，以及这项发明可能给人们生活带来的好处。使用 can be used for / is designed to / build up 等表达。 _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 参考答案与解析 小试牛刀 A 1. designed 2. produced 3. sent 4. read 5. built up 小试牛刀 B 1. Is the object designed on the computer? Yes, it is. / No, it isn’t. 2. Is the file sent to the 3D printer? Yes, it is. / No, it isn’t. 3. Can a 3D printer make human arms and legs? Yes, it can. / No, it can’t. 配套练习 A 1. B 2. B 3. B 4. B 5. D（3D打印机不能直接制造新鲜水果） 配套练习 B 1. designed, computer 2. produced 3. sent 4. read 5. built, building 拓展思考（示例） A 3D printer can be used for making prosthetic arms and legs. For people who have lost a hand or a foot, it is very helpful. The object is first designed on a computer. Then the file is sent to the printer, and the printer builds up plastic layer by layer. It can make a very cheap and light arm. I think this invention can change many people’s lives. It gives them hope and independence. 1 学科网（北京）股份有限公司 $