在括号里填上合适的单位名称
①北京故宫是世界上最大的宫殿,占地面积约72____ 。
②地球表面积大约是5亿____ 。
③一间教室的面积大约是50____ 。
④学校操场占地约1____ 。
⑤“鸟巢”的占地面积大约是20____ 。
⑥我国的领土面积约为960万____ 。
⑦课桌的面积大约是44____ 。
⑧一枚邮票的面积大约是8____ 。
阅读文段,回答问题:
自碑亭再往北,地势陡然高峻,由此上至祭堂前平台,全部砌以宽大的石阶。石阶以小平台划分为8段,每段30余步至50余步不等,共290级。石阶尽处,就是宽135米、深30米的大平台,中央则矗立着陵园的主体建筑——祭殿。平台是全陵的制高点,与入口处石坊的垂直高度差超过70米,这里视野辽阔,气象万千,既便近观,又宜远眺。当阳光灿烂时,远处方山如屏,秦淮似带;近处村舍相望,田圃纵横,道路津梁,行人车马,无不纤细入微,仿佛眼前展开了一轴工笔长卷。而当日出日没之际,在晨烟夕雾的迷蒙中,城犹潜蛇,山若伏鳖,馆阁楼台,隐约参错,远峰近树,依稀可辨,人们又好像面对着大幅的泼墨山水。无论是春夏秋冬、风霜雨雪,大自然都在向人们展示它那变幻无穷的奇妙景色。
A small town named Bundanoon in Australia has decided to stop the sale of bottled water(瓶装水). They say that bottled water can cause environmental problems. Too many resources(资源) are used to make bottled water. When people finish drinking the water, the bottles will be thrown away and go into dustbins. So they require local people in the town to stop buying bottled water and use tap water to drink. Visitors are encouraged to get water from water stations in the main streets, and fill the water in bottles that can be used again. The decision has been supported(支持) by all the shopkeepers in the town. Bundanoon is the world’s first town that has got its shop selling bottled water. Probably we should follow the example. Let’s stop buying bottled water and use tap water!
乔布斯说:“我愿意用我的全部科技来换取与苏格拉底一个下午的相处,因为他把哲学从高高在上的学科变得与人休戚相关。”乔布斯意在说明( )
①哲学是指导人们生活得更好的艺术
②哲学是“科学之母”,是具体科学的概括和总结
③能为自然科学发展提供方法论的指导
④离开哲学的指导,科学研究不能取得进步
被印度人称为“圣河”的河流是( )