Module 5 A Lesson in a Lab-period3课件 外研版必修1.ppt

13.—Have you got in touch with Tom? —Oh,sorry.I couldn’t his phone number at the moment. A.think about B.think over C.think out D.think of 解析 此题考查think短语辨析。think about 考虑；think over认真考虑；think out想出； think of想起；记起。 D 14.This is a piece of board at the gate of the construction,which reads： without permission. A.Keep out B.Keep away C.Keep off D.Keep up 解析 此题考查keep的搭配。keep out留在外 面;keep away （from）远离；keep off（使） 避开；不介入；keep up保持。根据句意“未经 许可，不得入内”。 A 15.—Bob,are you free at the moment？I have to ask you some questions. — . A.It’s a pleasure B.Ask,please C.Help yourself D.Yes,go ahead 解析 Go ahead.问吧；It’s a pleasure.是 别人表示感谢时的用语；Help yourself.自己 来吧！B项为汉式英语。 D 返回 * ★To know some metals and their reactions with some substances ★To learn how to do an experiment ★ To be able to retell the main points in the text ★ To build up the love for science * potassium sodium calcium magnesium aluminium zinc iron copper * 1.The Different Uses of Metals 2.The Reaction of Metals 3.The Reaction of Metals with Oxygen Choose the best title for Passage A. * Read Passage A again and answer the questions Which metals react the most with oxygen and water? What happens when you heat calcium in oxygen? Which metals react with steam? 4. Does iron have a slow or fast reaction with steam? 5. Does copper react with water? Potassium,sodium and calsium. It burns to form an oxide. Magnesium,aluminium,and zinc. Slow. No, it doesn’t. Do you think it is scientificto make Goujian Sword by using copper After learning Passage A What can we learn from Passage A? It is very important to know___ __________________________. It is very useful in our daily life. metals can react with different substances how How many stages are there in a scientific experiment report Passage B * Iron in dry air Iron in air-free water Iron in ordinary water Use of cotton wool ______________ Use of oil ________________