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《Using LanguageⅡ》集体备课PPT课件优质课下载
Advantages
Disadvantages
people don’t know about ________ and how _____ it is
more ___________ than other food
☆ free of ______________
☆ grow away from ______________and __________________
☆ be healthy and _____________
◆
◆
chemical fertilizers
industrial areas
dirty water supplies
safe
the food
good
expensive
More advantages of green food
☆ grow in ______ water/air without __________
☆ ______ ____ vitamins and nutrition(营养) without artificial colors
☆ grow with natural ______from animals
☆ do good to people’s health
clean
pollution
rich in
waste