1917年爆发了震惊世界的俄国十月革命，将社会主义的理想变成了现实。

材料一：如图1，2，3，4所示

材料二：（1917年4月）列宁返回俄国并发表了著名的《四月提纲》，提出了立即实现和平、将土地分给农民和全部政权归苏维埃的要求。

──（美）斯塔夫里阿诺斯著《全球通史》

材料三：1917年11月7日，布尔什维克的军队几乎没有遇到任何抵抗就占领了一些重要地点──火车站、桥梁、银行和政府大厦。因为11月时的资产阶级临时政府首脑克伦斯基就如同3月时的尼古拉一样，几乎没有什么虔诚的支持者，资产阶级临时政府从一开始就拒绝大多数俄国人所需要的东西──和平与土地。

──摘编自（美）斯塔夫里阿诺斯著《全球通史》

材料四：如图5，6所示

make a model plane

B

    There was a bookseller(书商). He did not like to pay for anything. One day a big box of books fell on his foot. "Go to the doctor," said his wife, "and show that foot to him." "No," he said, "I'll wait until the doctor comes to our shop next time. Then I'll ask him about my foot. If I go to see him, I shall have to pay."

    The next day, the doctor came to the shop to buy some books. The bookseller told the doctor about his bad foot. The doctor looked at it and promised(答应)to help. He took out a piece of paper and wrote something on it. "Buy this medicine and put it on the foot before you go to bed every night," he said.

    "Thank you," said the bookseller, "And now, sir, here are your books."

    "How much?" asked the doctor.

    "Two dollars." "Oh, good," said the doctor, "I shall not have to pay you anything today."

    "Why?" asked the bookseller.

    "I looked over your foot. I want two dollars for that. If people come to my house, I ask them to pay only one dollar for a small thing like that. But when I go to their houses, I usually charge(收费)two dollars. And I came here today, didn't I? Bye bye."