Another head and chief important reason I have chosen to put here is that human activity causes greenhouse effect.在这里，我还想强调的另外一个极为重要的原因就是人类活动导致了温室效应。本句也是主体段落中引出递进关系的句子。another表示上下文的递进关系，head and chief important reason强调观点或者原因的重要性，that引导表语从句，后面陈述具体原因。1. Still another important quality is for the boss to have open and good channels of communication with their employees.其次，优秀的老板应与员工之间存在公开、良好的沟通渠道。
2. A second purpose of awards or prizes is that it promotes excellence.
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