This term we have a new teacher of English. His name is Mr. Peterson. He is an Australian. He is not very tall and he is thin. He has a round face and small blue eyes. He wears glasses and they make him look smart. He has dark brown hair.

      Mr. Peterson works very hard. In class, he has many good ideas to make the class very interesting. We all like his class. After class, he always encourages us to speak more English. Sometimes, he plays games with us. He is very strong and he can play basketball and football very well. He is good at sports. Sometimes he plays table tennis with us, but he doesn’t play it very well.

       Mr. Peterson loves living in China very much. He enjoys lots of things in China. He really loves eating Chinese food. He loves traveling in China too. He is going to visit Xi’an next month.

家鸽适于飞行生活的形态结构和生理特点主要表现在以下几个方面：
(1)家鸽的身体呈____ 型，可以减少空气阻力，利于飞行动作。
(2)飞行器官发达：前肢变成了____ ，生有几排大型的正羽，胸部有很突出的龙骨突，有发达的____ ，可牵动两翼完成飞行。
(3)消化系统把食物消化后形成的残渣，随粪便及时排出体外，这样可以____ ，利于飞行。
（4）鸟呼吸时，除了肺这一器官外，还有许多与肺相连的____ 。

有三种长度分别为三个连续整数的木棒，小明利用中等长度的木棒摆成了一个正方形，小刚用其余两种长度的木棒摆出了一个长方形，则他们两人谁摆的面积大？（　　）

关于地球仪上的纬线表述，不正确的是（　　）