The2008 Beijing Olympic Games are drawing near.Are you eager to enjoy watching thematches or stsrt serving as a volunteer? First ,you need to know about audiencemanners. Most sprting arenas have rules for spectators written on the back ofthe tichets .Read your ticket carefully befoore you arrive. Try to reach yourseat half an hour before the start of the event and don’t leave when a game isin progress. When you leave, remember tou take away your soft drink vottles antother trash.
石榴
石榴,原名安石榴。石榴料。落叶灌木或小乔木,高2~7米;小校原形,或略带角状,顶端刹状,光滑无毛。叶对生或簇生,长倒卵形至长圆形,或椭圆状披针形,长2~8厘米,款1~2厘米,顶端尖,表面有光泽,背面中脉凸起;有短叶柄。花1至数朵,生于枝顶或腋生,有短柄;花萼钟形,橘红色,质厚,长2~3了厘米,顶端5~7裂,裂片外面有乳头状突起;花瓣与萼片同数,至生,生于萼桶内,倒卵形,稍高出花萼裂片,通常红色,也有白,黄或深红色的,花瓣皱缩,因单瓣,重瓣的不同,而有几个变种,奶白花石榴,黄花石榴,复瓣白花石榴,重瓣红花石榴等。花期6~7个月,果期9~10个月。
石榴原产波斯(今伊朗)一带,公元前二世纪传入我国。“何年安石国,万里贡榴花。迢递河源边,因依汉使搓。”据晋张华《博物志》云∶汉张骞出使西域,得涂林安石国榴种以归,故名安石榴。
石榴的营养特别丰富,含有多种人体所需的营养成分,果实中含有维生素e及b族维生素,有机酸、糖类、蛋白质、脂肪、以及钙、磷、钾等矿物质。据分析,石榴果实中含碳水化合物17%,水份79%,糖13~17%,其中维生素e的含量比苹果高1~2倍,而脂肪、蛋白质的含量较少,果实以鲜为主。
石榴可谓全身是宝,果皮、根、花、皆可入药。其果皮中含有革果酸,生物碱等成分,据有关实验表明。