如图所示，一次性打火机里的燃料是一种叫丁烷的物质，通常情况下呈气态。它是在常温下，用____ 的方法使它液化后储存在打火机里的；如果不小心将其摔坏，待里面的液体刚消失时，立刻捡起残骸，会感觉残骸较____ （选填“冷”、“热”），这是因为里面的液体迅速____ （填物态变化的名称）时要____ （选填“吸收”、“放出”）大量的热。

读“地壳物质循环简略图”（如图），回答下列问题．

单词拼写：根据短文内容和所给中文提示，在空白处写出单词的正确形式。每空限填一词。

    Tu Youyou, 84, is the woman who uses sweet wormwood's (青蒿)  special power to help millions of lives. Now she is ____ (广泛地) well-known as the winner of the 2015 Nobel Prize in Physiology or Medicine. We Chinese people take ____ (骄傲) in her.

    When Tu began her____ (医疗的) research in the 1960s, things were hard. They had neither modern machines ____ (也不) lots of money. But those didn't  ____ (阻止) her at all. She ____ (失败) many times, but she never gave up. And she even used to test medicine ____（通过）eating them herself. Tu was always busy with her work so she ____ (很少) stayed with her family. You can't imagine ____ (多么) hard her job was! Finally, Tu found artemisinin (青蒿素) in 1971. During the next few years, she made an effort to improve the medicine.

    According to World Health Organization, about 200 million people were  ____ (挽救) with the help of artemisinin. “I feel happy when I see patients become healthy again.” she said.

（Ⅰ）为了能对学生的体能做进一步了解，该校决定在第3，4，5组中用分层抽样的方法抽取6名学生进行体能测试，问第3，4，5组每组各应抽取多少名学生进行测试；

（Ⅱ）在（Ⅰ）的前提下，学校决定在6名学生中随机抽取2名学生进行引体向上测试，求第3组中至少有一名学生被抽中的概率； 

（Ⅲ）试估计该中学高三年级男生身高的中位数位于第几组中，并说明理由.