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外研2003课标版《Reading and vocabulary》PPT课件优质课下载
Introduction: Word Study
glass
aluminium
wood
brick
rubber
steel
concrete
mud
plastic
_________ is a very light metal.
2. _____ is a very strong metal.
Aluminum
Steel
3. Both ______ and _____ come form trees.
4. ______ is light, strong, very popular, and man-made.
5. ______ are often used to build walls.
6. ________ is very strong and used in many modern buildings.
rubber
wood
Plastic
Bricks
Concrete
7. _____ is wet earth.
8. _____ is a natural hard material.