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dirty
rubbish
thirty
Watch and answer.
What makes our city dirty?
Watch and answer.
What makes our city dirty?
rubbish
smoke
Where does the smoke come from?
Read the dialogue on P.58. Try to underline the answers.
(读58页对话,试着划出课文中的答案。)
Read and underline
What makes our city dirty?
What makes our city dirty?
Read and underline
Smoke from cars makes the air dirty.
hair
What makes our city dirty?
Read and underline
Smoke from cars makes the air dirty.
Black smoke from factories makes the air dirty too.
factory
What makes the city dirty?
Read and underline
Smoke from cars makes the air dirty.
Rubbish makes the streets messy and dirty.
Black smoke from factories makes the air dirty too.
rubber fish rubbish(垃圾)
What makes the city dirty?