（1） c c frequent （2） h h ecology （3） f f broadcast （4） a a harmonious （5） b b submit （6） d d policy （7） g g annual （8） e e seize

a.friendly，peaceful and without any arguments b.to give a document，proposal，etc.jye.ai some- body in authority so that they can study or consider it c.happening or doing sth often d.a plan of action agreed or chosen by a political party，a business，etc. e.to be quick to make use of a chance，an oppor tunity，etc. f.to send out programmes on television or radio g.relating to a period of one year h.the relation of plants and living creatures to each other and to their environment；the study of this