Asthma is a kind of respiratory disease.
查看答案
Asthma leads to the difficulty of the air flowing in and out of the lungs.
A. 对
B. 错
airways
A. 器官
B. 气道
C. 空气
D. 道路
What are the common signs of asthma patients?
Asthma patients often cough a lot.
B. They may also make a wheezing.
C. Some patients feel tightness or pain in the chest.
D. Severe asthma can lead to death.
微信支付 
支付宝支付