A:“家天下”取代“公天下”
B:已有一套从中央到地方的行政管理制度
C:采取民主的方式推选国家最高掌权者
D:王位在一家一姓中传承
Only when we realize how serious the environment is damaged, _______ is usually ignored, ______ try our best to fight against it.
He listens to music at home every day.(用yesterday改写句子)
He____ to music at home yesterday.
我国水资源的特点是( )
①水资源时空分布不均
②水资源污染、浪费严重
③人口和经济发展,用水量大增
④水资源总量大,人均量多.