(
课件网) Unit 5 Unit 5 Revealing nature Biodiversity To listen for main idea and specific information. To summarize a conversation and make a presentation. To read and think critically, giving more examples on the topic. To develop the awareness of respecting the ecosystem. March 3rd marks World Wildlife Day, a day dedicated by the United Nations to raise awareness for the protection of wildlife and biodiversity, which are essential to human survival. The 2025 theme is “Wildlife Conservation Finance: Investing in People and Planet”(野生动植物投融资：投资于人类与地球). Enjoy a video. What is biodiversity 1. biodiversity 生物多样性 (biology+diversity) 2. bacteria (pl.)细菌 (single) bacterium 3. species 物种 4. organic matter 有机物 5. immune systems 免疫系统 6. ecosystem 生态系统 7. cell 细胞 Some useful words and expressions you may meet in your listening: Listen to the podcast and choose the statements that are made. 1. Biodiversity is important. 2. Bacteria are always harmful to humans. 3. Some species of bacteria are used in food production. 4. Many species of bacteria recycle dead organic matter. 5. Our immune systems are able to fight off all germs. Listen again and complete the fact sheet. Cells Every living thing is _____. They are like _____. In the human body there are about _____ human cells and around _____ bacteria cells. Bacteria Most bacteria in the human body can _____. In the food production process, bacteria can _____ dead organic matter. made up of cells bricks that are used to build houses thirty trillion thirty-nine trillion help with digestion break down Discuss what you know about cells and bacteria. Complete the boxes with the expressions from the podcast. Checking background knowledge Do you know about... Have you heard of ... By the way, … In fact,.... Actually, .... Speaking of which, ... Adding information Do you know about ... Have you heard of ... By the way, … Actually, ... In fact, ... Speaking of which, ... Read the passage and answer the questions. What species are mentioned and what is special about them 2. What other unusual life forms do you know of Two species are mentioned: the blue whale and the water bear. The blue whale is the largest animal species on Earth, which can grow up to almost 30 metres in length and weigh over 130,000 kilos. The water bear is probably the toughest species, which can survive temperatures from 150℃ to a below freezing -272℃. Complete the paragraphs with the correct form of the words and expressions in the box. 1 The Galápagos Islands are renowned worldwide for their unique biodiversity. The Giant Tortoise Reserve on Santa Cruz 1 _____ several species of giant tortoise that 2 _____ the Galápagos Islands. The island is also home to the Charles Darwin Research Station, where 3 _____ studies are carried out. is home to are native to scientific ancestor scientific be native to primitive habitat appearance be home to ecosyst ... ...
