如图，有一堆圆锥形的稻谷，垂直高度CO=4$\sqrt{2}$m，底面⊙o的直径AB=4m，B处有一小猫想去捕捉母线AC中点D处的老鼠，则小猫绕侧面前行的最短距离为____m．

A: What's the matter with you, young man?
B: Oh, doctor. I'm not feeling well. ____  I think I will die.
A: Die? I don't think so. Take it easy.（放轻松）____ 
B: Ahh... I must have a terrible illness.
A: Em...____ I am sure you will be all right soon.
B: But I really feel very terrible. What should I do now?
A: ____ 
B: Is that all?
A: You should drink more water and you shouldn't eat spicy（辣的）food.
B:____ 
A: No, you needn't

已知函数f（x）=1﹣$\frac{a}{2^x+1}$（a为常数）为R上的奇函数．

（Ⅰ）求实数a的值；

（Ⅱ）对x∈（0，1，不等式s•f（x）≥2^x﹣1恒成立，求实数s的取值范围；

（Ⅲ）令g（x）=$\frac{2}{1-f\left(x\right)}$，若关于x的方程g（2x）﹣mg（x）=0有唯一实数解，求实数m的取值范围．

下列关于基因和染色体在减数分裂过程中行为变化的描述，错误的是（　　）