2016年12月21日冬至是我国农历中的一个重要节气，我市民间也有“冬至馄饨夏至面”的习俗。古人对冬至的说法是：阴极之至，阳气始生，日行南至，日短之至，日影长之至，故曰“冬至”。读地球公转示意图，完成以下问题。

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    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."

我国面积最大的沙漠是____沙漠；该地区由风力作用形成____地貌。

党和国家的高级领导干部如果违法犯罪同样要受到法律的严惩。这告诉我们（     ）

①公民在法律面前一律平等

②法律对党员干部有着特别的约束力

③法律是全体公民意志的体现

④在我国任何人都不能享有法律之外的特权