【单选题】What is the national animal of the USA?
【单选题】Which is the national animal of the UK?
【单选题】The national animal of America is ( )
【单选题】根据圆轴扭转的平面假设,可以认为圆轴扭转时其横截面 。
【判断题】The national animal is kangaroo. .
【判断题】The national animal is kangaroo in Australia.