单项选择题

Which of the following is NOT mentioned as a possible cause of lung diseases

A．The burning of coal
B．Long-term exposure to smog
C．Exposure to nitrogen dioxide
D．Attending school camps
<上一题 目录 下一题>
热门 试题

单项选择题
Which of the following is NOT mentioned as a possible cause of lung diseases
A．The burning of coal
B．Long-term exposure to smog
C．Exposure to nitrogen dioxide
D．Attending school camps
单项选择题
Which of the following is NOT the result of laboratory experiments
A．Low concentrations
B．Fall in lung function
C．Irritability of the lungs
D．Air way inflammation
相关试题