Many young people like playing football very much. In China we can often see children playing football on the playground. In China and England, people call British soccer football. They don't call it soccer.
    A British soccer ball is round. There are eleven players in a team. But an American football is not round. It's like an egg. They also have eleven players on the field in one team.
    American football is very popular（流行的）in the USA. Players can catch the ball with their hands. But in a British soccer team, only the goalkeeper（守门员）can pick up the ball with his hands.
    Playing ball games is good for you. It can make you happy and healthy.

下列各句中，没有语病的一句是（      ）

读“中国1月平均气温分布图”，完成问题．
 
影响我国一月份气温分布的主要因素是（ ）