Unit 1 Build up your vocabulary 课件-2022-2023学年高中英语人教版（2019）选择性必修第一册

Unit 1 people of achievement build up your vocabulary Step 1 How was artemisinin discovered? 1.Artemisinin is a __________ (关键性的) new treatment for malaria. 2.Chinese government formed a team of scientists with the __________(目标) of discovering a new treatment for malaria. 3.Their project got stuck. However, Tu Youyou would not ____________(承认) defeat. 4.Boiling the sweet wormwood ___________(明显地) destroyed its medical properties. 5.Tu and her team members even ________(坚持) on testing the medicine on malaria patients, most of whom recovered. crucial objective acknowledge apparently insisted Step 2 Write donw the word that matches each definition and find the sentences containing these words in the text. *cook something in very hot water *relating to plants *qualities or characteristics of something *a kind of substance that flows freely, such as water or milk *physical material that exists boil botanical propeties liquid substance Step 2 Write donw the word that matches each definition and find the sentences containing these words in the text. boil botanical propeties liquid substance Tu Youyou and her team first tried ___________ sweet wormwood and used the _______ obtained, only to find it didn't work since its medical ____________ were destroyed. It was not until she used a lower temperature that the _____________ named artemisinin,a ___________ treatment for malaria,was successfully extracted. Exercise: use the words with correct forms to fill the blanks. boil botanical properties liquid substance boiling liquid properties substance botanical Step 3 Guess the meaning of the underlined words and fill in the blanks with words that have the same roots. 1. The two flowers are quite distinct from one another, so it is easy to make a _____________ between them. 2.Scientists need to ____________ how the new material stands up to wear and tear to prove how valuable it is. 3. A talented scientist well known for his____________ to his country, Hua