It is a one-day life of Wei Hua. She gets up before 7:00 in the1 and quickly2her face. She goes to school early. She3hard（努力地） in class（在课堂上） all day.She4basketball after school, and then5home.

    Wei Hua's6is  broken(坏了) in Maths lesson, so he needs a new one. On her way home（在回家的路上）, she buys a new pen at a7When she8home, she has a short9After that she10her parents. She cooks supper and11the house.

    She watches TV for half an12after supper. Then she starts her homework. She finishes it13half past nine. She goes to14before a quarter to ten. How15Wei Hua is!

某化工厂以石灰石、纯碱和水为主要原料制取烧碱．其制取过程中的变化关系可表示为：

CaCO₃CaOCa（OH）₂NaOH

上述变化过程中没有涉及到的化学反应类型是（　　）

    Mr. and Mrs. Brown lived in a small town near London with their children. Sometimes Mr. Brown came back home from work very late, when his wife and the children were asleep, and then he opened the front door of this house with his key and came in very quietly. But one night when he was coming home very late, he lost his key, so when he reached his house, he rang the bell. Nothing happened. He rang it again. Again nothing happened. Nobody moved inside the house. Mr. Brown knocked at(敲)the bedroom window, he spoke to his wife, he shouted, but she didn't wake up. At last he stopped and thought for a moment. Then he began to speak like a small child. "Mother! "he said. "I want to go to the toilet!" He spoke quite quietly but at once Mrs. Brown woke up. Then he spoke to her, and she opened the door for him.

医生常常选择患者手背上的“青筋”作为输液针刺部位，这些“青筋”是（　　）