高中英语 42(Unit4 Key to exercises in the workbook II)课件 新人教版选修9 课件VIP免费

新课标人教版课件系列《高中英语》选修 ( 模块） 9-4.2Warming up Discuss the question:What’s the relationship betweenplants and animals?Reading on P.78Pre-reading Before you read the text, glance quickly through it and answer these questions. 1. What’s the topic of the text? 2. What three plants are featured? 3. What do the photos show you? 4. What three animal pollinators are featured?1 1 What’s the topic of the text? Co-evolution. 2 What three plants are featured? The yucca, the Traveller’s Palm, and the Ophrys orchid. 3 What do the photos show you? Yucca flowers, a Traveller’s Palm, and an Ophrys orchid. 4. What three animal pollinators are featured? The yucca moth, the Madagascar black lemur, a certain kind of wasp (the male, not the female wasp).First reading Now read the text more carefully and answer these questions.1. Why can no other animals but the yucca moth pollinate the yucca? It’s only the yucca moth which is the right size and shape to pollinate the yucca.22. Can you guess why the Traveller’s Palm has that name? The Traveller’s Palm has this namebecause travellers used to drink its nectar when they were thirsty.3. What do you think “sweet tooth” means? If a person or an animal has a “sweet tooth”, they like sweet food very much.4. Why do the male wasps try to mate with the orchid flowers? The male wasps try to mate with the orchid flowers because they look like and smell like female wasps. 5. Why do the female wasps visit the orchid flowers? Do they have a role in pollination? The female wasps visit the orchid flowers to collect the chemical that the male wasps were attracted to earlier. The female wasps do not have a role in pollination since the flowers ar...