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The respiratory system

Science

Fill in the blanks

科学 Science

 

nose                  diaphragm        trachea                         respiratory            inhale               exhale             mouth               oxygen             carbon dioxide            upwards            downwards                 bronchi   

 

1.Choose the right word and fill in the blanks. Some words might be used more than once.


1.选择正确的单词并填写空白。有些词可能会被多次使用。

 

 

 

 

How air moves in the respiratory system

science

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