1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
《Reading and vocabulary》PPT课件优质课下载
aim
methods
result
conclusion
test tube
test tube holder
cotton wool
oil
煤气灯（本生灯）
Bunsen burner
iron nail
Listen to the tape and complete the sentences
1. In the first part of the experiment,the is not wet.
2. It shows that iron when the air is dry.
3. In the second part of the experiment, you must the water to make sure there is no in it.
4. You add to the water because this keeps out of it.
5. It shows that does not rust in water that has no in it.
does not rust
boil
air
some oil
air
nail
air
air