【单选题】( )是指企业出于扩大宣传的目的,将自己的网站提交到搜索引擎上,让相关的商品和服务信息进入到搜索引擎数据库,以增加与潜在顾客通过互联网建立联系的机会。企业网站被搜索引擎收录以后,企业需要不时追踪企业网站在搜索引擎巾的排名变化,若网站排名下降幅度较大,企业应考虑承新注册,并仔细分析原因,有针对性地对搜索引擎进行优化和维护。
【单选题】If one______, he will be very particular about others clothing and appearance.
A.
has been overcome by vanity
【单选题】He has been asked to account _____ his absence.
【单选题】He has been for you since six o ’clock.
【简答题】( D ) Old Mr. Green has lived in southern Iowa for a very long time. He has worked on the land all his life and he sees no reason to stop now. His legs have bothered him for many years, and his hands ...
【单选题】( )是指企业出于扩大宣传的目的,将自己的网站提交到搜索引擎上,让相关的商品和服务信息进入到搜索引擎数据库,以增加与潜在顾客通过互联网建立联系的机会。企业网站被搜索引擎收录以后,企业需要不时追踪企业网站在搜索引擎中的排名变化,若网站排名下降幅度较大,企业应考虑重新注册,并仔细分析原因,有针对性地对搜索引擎进行优化和维护。
【单选题】He has been so occupied with his work these days that he barely has time to his friend s. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】( )是指针对各种搜索引擎的检索特点,让网页设计符合搜索引擎的搜索原则和搜索算法,从而获得搜索引擎的收录并在排名中靠前的各种方法。
【简答题】He has been o____(坦率的,直言不讳的) in his criticism.
【单选题】1953年,毛泽东和中共中央提出了加快从新民主主义社会向社会主义社会转变的