—Please be more      . I believe you'll make it.

    Zhang Lin is a middle school student. He is a good boy. Uncle Wu lives next to him. Uncle Wu has no child and can't see anything. He works in the factory (工厂) near Zhang Lin's school. He goes to work at 7:30 in the morning and comes home at 4:30 in the afternoon. Zhang Lin walks to school at 8:00 in the morning and comes home at the same time as Uncle Wu in the afternoon. On weekdays Zhang Lin gets up early to take Uncle Wu to the factory. After school he takes him home. On Sundays Zhang Lin helps Uncle Wu clean the house and do some cooking. Uncle Wu thanks Zhang Lin very much. He says, “Zhang Lin is a good boy. He is like my son.”

①表明中美两国友好相处，没有任何矛盾

②有助于世界的和平稳定、共同发展

③符合和平与发展的时代主题

④能够消除霸权主义和强权政治的威胁

下列关于角的说法正确的个数是(   )
①角是由两条射线组成的图形;②角的边越长,角越大; ③在角一边延长线上取一点D;④角可以看作由一条射线绕着它的端点旋转而形成的图形.