In 1955 in Montgomery, Alabama, only white people were ____ to sit in the first four rows of public buses. African-American people had to use the seats towards the ____ of the bus.

    If someone ____ was African-American sat in the white part, he or she would be asked to move.

    One day, an African-American named Rosa Parks was ____ in a “whites only” part of the bus.

    The bus was ____ and some white people needed a seat, so the driver asked Rosa Parks to give ____ her seat.

    But she refused. She was ____ after a long day working in a store and she felt she should have the right to sit ____ she wanted, so she told the driver “no”.

    For that, she was arrested (逮捕). She was tried for just 30 minutes and fined (罚款) $10—a lot of money in those days.

    She also ____ her job because of that.

    Today, in the United States, December 1 is a ____ called Rosa Parks Day. Rosa Parks is celebrated for her action and bravery.

材料一：商代流通中普遍使用海贝作货币，到战国，形态各异的铜币开始流行，秦始皇兼并天下后，始终以圆形方孔铜钱作为充当本位货币。汉武帝时，收回了郡国铸币权，正式确定了中央对钱币的铸造、发行和管理权。唐高祖时，废轻重不一的古钱，此后铜钱钱文不书重量，而以“通宝”相称。截至元末，与铜钱并行流通的先后还有黄金、布帛、纸钞和银两。

明初，流通中铜钱与“宝钞”并行，禁金银交易，但江南商贾“不论货物贵贱，均以银定价”。嘉靖初（1522年），“钞久不行，钱大已壅”，朝廷遂“弛用银之禁”。到万历九年（1581年），“一条鞭法”把丁役、土贡等归于田亩，“计亩征银”，白银发展为流通中的主要货币。

——摘编自齐涛《中国古代经济史》等

材料二：1933到1934年，美国在世界市场上大量收购白银，引起中国白银不断外流。加上币制的紊乱，中国屡现金融恐慌。……1935年，国民政府公布“币制改革”方案，规定：1935年11月4日起，以中央、中国、交通三银行发行的钞票为法币；所有税收和公私款项均用法币支付，禁止白银在国内流通；白银收归国有，作为外汇准备金，以稳定法币对外汇价。

——摘编自吴申元主编《中国近代经济史》

下图为我国东南某地区等坡度线（地表坡度值相等的点连成的线）图，图中数字代表坡度（坡面与水平面的夹角）。读图，完成下列各题。