____ ____ Jim ____ to school?
—What was the party like?
—Wonderful. It is years________I enjoyed myself so much.
——Have a nice day to you!
——_________________.
①分清主流与支流
②把握联系的多样性
③正确发挥主观能动性
④承认矛盾并正确解决矛盾
下图表示某日20时海平面气压分布及16~24时北京空气质量指数变化(指数越低表示污染物浓度越低,空气质量就越好),该日20时( )