Unit 6 When was it invented？ Section B 1a～2e 课件 2023-2024学年人教版九年级英语全册（安徽地区）

Unit6　When was it invented? 第4课时　Section B 1a～1e ⁠ 一、 根据首字母及汉语提示,完成下列单词的拼写,使句意明确,语言通顺。 1. Lemons are  　sour　⁠（酸的）.  2. We often put the food into the  　fridge　⁠（冰箱） to keep it fresh in summer.  3. Ann wore my hat by  　mistake　⁠（错误）.  4. The fish was too  　salty　⁠（咸的） because my mom put too much salt on it.  sour　 fridge　 mistake　 salty　 3 二、 用所给词的适当形式填空。 1. The teacher makes the children  　feel　⁠（feel） confident about asking questions.  2. Kites were once used for  　sending　⁠（send） messages in wars in the old days.  3. Edison was a great inventor and he had many  　inventions　⁠（invent） in his life.  4. A worker  　called　⁠（call） Mike sang a beautiful song at the party.  feel　 sending　 inventions　 called　 三、 单项填空。 （　A　）1. The potato chips have been in the bag for half an hour. They are not  　　　　⁠ anymore.  A. crispy B. sweet C. salty D. sour （　D　）2. Sorry, Jane. I took your bag by  　　　　⁠.  A. hand B. heart C. bike D. mistake （　A　）3. Milk quickly turns  　　　　⁠when it’s hot.  A. sour B. sweet C. salty D. crispy A D A （　B　）4. Things in this store are cheaper than those in other stores. So many  　　　　⁠are in it.  A. Drivers B. customers C. students D. cooks B ⁠ 四、 阅读下面短文,并用英语回答问题（请注意每小题的词数要求）。 People often use the natural world as inspiration（灵感） for their inventions. By watching animals and plants, they make new things to serve people. Here are some examples. Animals can do many things that humans can’t do, like flying or staying underwater for a long time. The plane is one of the greatest inventions in history. Thanks to it, people can travel long in the air. This has helped to develop trade and traveling. The idea of the submarine（潜艇） comes from a sea animal. It can travel underwater. It is very useful for learning about the undersea world. Plants around us are also great sources of ideas for other wonderful inventions. The self-cleaning glass window and the cloth used to make umbrellas were both inspired by the leaves of t