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Tu Youyou: A Heroine in the Fight Against Malaria
Tu Youyou, an excellent Chinese pharmaceutical chemist(药物化学家), was born in Ningbo, Zhejiang in 1930. She graduated from Beijing Medical College in 1955 and devoted her life to traditional Chinese medicine research.
In the 1960s, malaria(疟疾) made millions of people around the world sick.
The old medicines did not work well. In 1967, China started “Project 523” to find a new cure. Tu led her team. For many years, she and her team found more than 2,000 herbal recipes(药方) and tested over 380 extracts(提取物).
The turning point came from an old Chinese medicine book. It said that wormwood(青蒿) could help, but it should not be cooked in hot water. Tu used a low-temperature way to get the important part from wormwood.
On October 4, 1971, their sample worked 100% against malaria in small animals. In 1972, they found the important component—artemisinin(青蒿素). Tu tested the medicine on herself first to make sure it was safe.
In 2015, Tu received the Nobel Prize for discovering artemisinin. It has saved millions of lives. She was the first Chinese woman to win this prize in science. Tu’s work connects Chinese medicine and modern science, telling us the importance of hard work and persistent study.
Tu’s story teaches us something important. Old knowledge can help us solve new problems. Also, hard work and smart thinking can change the world.
Today, artemisinin is still used to treat malaria in many countries. Thanks to Tu Youyou, millions of people are alive and healthy.
根据短文内容，回答下列问题。
46. What prize did Tu Youyou win in 2015?

47. Why did China start “Project 523” in 1967?

48. Where did Tu Youyou and her team look for ideas to find the medicine?

49. What important component did Tu Youyou’s team find in 1972?

50. What can we learn from Tu Youyou according to the passage?

46. She received the Nobel Prize for discovering artemisinin.
47. Because malaria made millions of people around the world sick, the old medicines didn't work well, and China wanted to find a new cure for malaria.
48. They looked for ideas from an old Chinese medicine book (and lots of traditional herbal recipes).
49. They found the important component artemisinin.
50. Old knowledge can help us solve new problems, and hard work as well as smart thinking can change the world. (答案符合原文表意即可)

46. 本题为细节理解题，可直接定位到文章第五段首句内容，提取对应信息即可得出答案。
47. 本题为细节理解题，根据文章第二段的描述，当时疟疾导致全球数百万人患病，原有药物疗效不佳，中国启动该项目的目的是找到治愈疟疾的新方法，梳理原文信息即可作答。
48. 本题为细节理解题，根据文章第三段内容可知，研究的转折点来自一本古老的中医药典籍，屠呦呦和团队正是从传统中医药相关内容里寻找研发药物的思路。
49. 本题为细节理解题，可直接定位到文章第四段对应内容，提取1972年团队发现的核心物质信息即可。
50. 本题为主旨归纳题，结合文章倒数第二段的总结内容，提炼从屠呦呦事迹中得到的启示，符合原文表意即可。