Rising sea levels and drought caused by global warming could          an increasing number of natural disasters.

A．try out

B．come about

C．result in

D．get into

"如入芝兰之室，久而不闻其香"属于感觉的（）现象。

A.知觉

B.嗅觉

C.嗅觉适应

D.嗅觉感受性