题干

阅读材料,完成下列问题。

材料一  我国水资源总量约27000亿立方米,居世界第六位。但我国水资源的空间分布不均。从我国各大江大河径流分布看,长江、珠江、黑龙江径流量较丰富,而黄河、淮河、海河、辽河径流量较少,水资源十分紧张,形成“三江丰富,四河紧张”的局面。再加上近几十年来人口增长过快,工农业和城市化进程发展较快,更加剧了北方地区水资源紧张的程度。

材料二  漫画“就地取材”。

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    “My dear lady,”says Holmes.“You're shivering.Are you cold? Do you want a cup of hot tea?”

    “I'm not cold,”the woman replies,“I fear for my life!”

    “We are here to help you.Don't worry about anything.I don't know you.But I know many things about you.For example,I know how you traveled.You came to London by train.You also rode to the train station on a horse—drawn wagon.''

    “Why,yes.You‘re right.But how do you know these things?”

    “I see a return ticket in your glove.I see fresh mud on the left arm of your dress. Now tell us your problem.''

    “My name is Helen Stoner,”she states,“My mother and father are dead.I am living with my stepfather.Dr.Grimsby Roylott.He comes from a rich family.But they are no longer rich.They have nothing except a small piece of land and a huge old house.We are living in the house. Dr.Roylott is using my mother's mone37 for expenses.Part of it was for my sister and me. It was for our marriages.”

    Holmes is sitting in his chair.His eyes are closed.He is listening carefully to Helen's story.He hears every detail.

    Helen continues. “My stepfather has no friends.He fights with everyone.He is strong and gets angry quickly. Everyone is afraid of him.”

    “He has no friends at all?”asks Holmes.

    “No.He talks to no one except the gypsies(吉普赛人).They are poor people who travel from place to place.A band of gypsies is staying on our land right now.''

    “Are you and your sister afraid of the gypsies?”

    “My dear Mr.Holmes.You are making me so sad.My sister is dead.That is why I am standing here in this room.”    ,  .