题目内容

What is Chronic obstructive pulmonary disease?

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Is chronic obstructive pulmonary disease a kind of common diseases?

A. 对
B. 错

Doctors can use a spirometer to perform a quick breathing test to see if people have COPD.

A. 对
B. 错

COPD has 2 most common forms. They areand.

What is the pathogenic cause of COPD?