我市某中学一地理研究小组在老师的指导下做了如下实验：步骤（1）一位学生把一大盆水快速倒在平坦的水泥地板上，同时另一位学生把水快速倒在平坦的草坪上；步骤（2）观察水在水泥地板和草坪上的流动情况。据此回答10题。   
【小题1】该实验能够验证的地理现象有
①雨水侵蚀现象              ②地表径流形成现象
③城市暴雨洪水现象          ④洋流形成现象

在①金属铁　②氯酸钾　③纯碱　④单质碘　⑤二氧化硅　⑥烧碱　⑦盐酸　⑧氧化钙⑨水⑩干冰中，属于金属单质的是　 ____（填序号，下同）；属于非金属单质的是　 ____；属于盐的是　 ____；属于碱的是　 ____；属于酸的是　 ____；属于碱性氧化物的是　 ____；属于酸性氧化物的是　 ____ 属于不成盐氧化物的是 ____

黑格尔《历史哲学》中说：“……平凡的土地，平凡的平原把人类束缚在土壤上，把他卷入无穷的依赖性里边，但是大海却挟着人类超越了那些思想和行动的有限的圈子。”从古希腊看，下列不能反映“大海却挟着人类超越了那些思想和行动的有限的圈子”的成果的是（    ）

阅读下面短文, 从每题所给的A、B、C、D四个选项中选出最佳选项。

D

    How old is "old"? The answer has changed over the years. Two Hundred years ago, you were old at 35. At the beginning of the 20th century, the average life span(平均寿命) was 45. In 1950, 70-year-olds were really old. Today, a healthy 70-year-old is still thought young.

    So, how old is "old"? The answer is one you've heard many times, from all kinds of people. "You are as old (or young) as you feel. " Your age simply tells you how many years you have lived. Your body tells you how well you've lived.

    "Nobody grows old by living a number of years, "Wrote a writer. "People grow old when they don't have their ideals(理想)." People shouldn't have the wrong ideas about aging. Sometimes, older minds can be as bright as young minds. Alice Brophy once said, "It makes me unhappy when people say, 'You look young for your age.' What does that mean? You know you can die old at 30 and live young at 80."

如图所示是一个能吹出冷热风的电吹风简化电路图，图中A是吹风机，B是电热丝，则下列分析正确的是(  )