根据短文理解，选择正确答案。

    There are fifty students in our class. There are twenty-four boys and twenty-six girls. Some students live near the school, and some others live far from school. About half of the students usually come to school by bike. They often get to school at a quarter to seven. About fifteen students often come to school by bus. They often get to school very early, too. Another ten students come to school on foot. Their homes are near the school, but they are often late for school, because they get up late.

—It's to play together and ______ the best in each other.

    Hi, my name is Zhao Shuo.____(this)are my two good friends:Qian jing and Tu Yue.We all like sport____(连词)we play football on Saturday.   

    My father is____(冠词)teacher at our school. Their fathers are____(policeman). Dogs can help their work. This is my father's dog.____(it)name is Xuanfeng.

香港澳门回归以来，不仅抵御了亚洲金融风暴冲击，而且化解了历史遗留下来的问题，使社会更加稳定，经济逐步复苏，还进一步密切了与内地的交往，扩大了与国际社会的文化、经济联系，加强和巩固了港澳作为国际贸易、航运、金融等方面的地位。这充分说明（    ）

①只有社会主义才能发展香港澳门

②香港的成功离不开中央人民政府和祖国内地的大力支持

③“一国两制”适合任何国家

④“一国两制”方针是完全正确的，具有强大的生命力

右图可以看作是由一个等腰直角三角形旋转若干次而生成的, 则每次旋转的度数至少是（       ）