A:呼吸作用
B:渗透作用
C:蒸腾作用
D:光合作用
I tried many ways I could think of____ (stop) the little boy from crying.
双曲线x24-y2=1的渐近线方程为( )
“女大十八变,越变越漂亮”,与之直接相关的器官和物质是( )