根据短文理解选择答案。

    In many English homes people eat four meals a day. They have breakfast at any time from seven to nine in the morning. They eat porridge(粥), eggs or bread and drink tea or coffee for breakfast. Lunch comes at one o’clock. Afternoon tea is from four to five and dinner is about half past seven. First they have soup, and then they have meat or fish with vegetables. After that they eat some other things, like bananas, apples or oranges. But not all English people eat like that. That is to say, most Englishmen have breakfast, lunch, afternoon tea and dinner in a day.

复数z₁、z₂在复平面内分别对应点A、B，z₁=3+4i，将点A绕原点O逆时针旋转$90°$得到点B，则$\stackrel{-}{z_2}=$（   ）

人民政协根植于中国历史文化，产生于近代以后中国人民革命的伟大斗争，发展于中国特色社会主义光辉实践，具有鲜明中国特色。对人民政协理解正确的是（    ）