下列各项中,属于激素调节的是( )
A:食物误入气管引起剧烈咳嗽
B:强光射来时,迅速眨眼
C:看电影感动得落泪
D:男同学在青春期喉结突出
There are fewer and fewer tigers in India. The situation will continue ______ humans stop hunting them for their fur and bones.