All animals in nature must learn to to a changing environment in order to survive.
A. attach
B. adapt
C. respond
D. turn
网友回答
A. attach
(答案→)B. adapt
C. respond
D. turn
解析： A. attach附上，贴上， B. adapt适应，改编，C. respond回答，回应，D. turn转身，转变，句意：自然界的所有的动物为了生存都能适应改变的环境。所以选B。