考古发掘资料表明，原始社会末期出现了私有财产和贫富分化情况。其主要判断依据(      )

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.