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牛津上海版英语八年级下册《Word bank》多媒体精品ppt课件
Units
Module
Trees
Trees
Brainstorming.
Trees
I. Choose the proper words to complete the sentences.
release protect one another communicate destroying
average alive as well as calculate natural
1.Trees cool the air ________ clean it .
2.Trees are _____ air conditioners.
3.Trees can ___________with__________,but we don't know how.
4.Trees produce oxyen . Scientists can_______the amount made each day.
5.Trees release oxygen into the air which keeps us_______.
6.The ______ age of trees is 4.000 years.
7.We must ______ trees instead of ________ them.
natural
communicate
one another
calculate
alive
average
protect
destroying
as well as