下列属于水土流失治理的工程措施的是( )
A:打坝建库,平整土地
B:轮作套种
C:退耕还林还草
D:深耕改土
西周末代君主幽王昏庸无道,为博褒姒王妃一笑,烽火戏诸侯,最终导致西周灭亡。其中的“诸侯”产生于( )
They got two free tickets to Canada; otherwise, they'd never have been able to ______ to go there.
根据下面图片以第一人称写一篇短文,词数80左右。开头已给出 I took part in a friend's birthday party in the evening. It rained when I went home. On my way back home.