题目

—Mom, I am going to spend my summer holiday in Australia, could you please ___________my puppy, please? —Sure, My pleasure. A . look at B . look for C . look after D . look out 答案：C10．下列哪项和鸟类飞行生活无关（　　）A．身体呈流线型B．双重呼吸C．前肢变成翼D．体温恒定