選修九 4.2《Unit 4　Key to exercises in the workbook (II)》PPT課件（新課標(biāo)人教版－選修9）

1、2021/4/201新課標(biāo)人教版課件系列高中英語(yǔ)選修選修( (模塊）模塊）9- 9-4.22021/4/202Warming up Discuss the question:Whats the relationship betweenplants and animals?Reading on P.782021/4/203Pre-reading Before you read the text, glance quickly through it and answer these questions. 1. Whats the topic of the text? 2. What three p

2、lants are featured? 3. What do the photos show you? 4. What three animal pollinators are featured?1 12021/4/204 1 Whats the topic of the text? Co-evolution. 2 What three plants are featured? The yucca, the Travellers Palm, and the Ophrys orchid. 3 What do the photos show you? Yucca flowers, a Travel

3、lers 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).2021/4/205First reading Now read the text more carefully and answer these questions. Why can no other animals but the yuc

4、ca moth pollinate the yucca? Its only the yucca moth which is the right size and shape to pollinate the yucca.2 22021/4/2062. Can you guess why the Travellers Palm has that name? The Travellers Palm has this namebecause travellers used to drink its nectar when they were thirsty.2021/4/2073. What do

5、you think “sweet tooth” means? If a person or an animal has a “sweet tooth”, they like sweet food very much.2021/4/2084. 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. 2021/4/2095. Why

6、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 are dying when they visit them.2021/

7、4/2010Second reading Now read and think about the advantages and disadvantages of the relationships between the plants and pollinations described in the text. Check your understanding and complete the table.3 32021/4/2011Plant/pollinatorAdvantagesDisadvantagesYuccaMothThe yucca is certain to be poll

8、inated.The moths caterpillars have a certain supply of foodThey are totally dependent on each other for survival.2021/4/2012Plant/pollinatorAdvantagesDisadvantagesTravellerspalmLemur The palms flower can be opened by the lemur.The lemur has a source of food.There is a disadvantage for the palm only

9、if there are no lemurs or other animals present strong enough to open the flowers.2021/4/2013Plant/pollinatorAdvantagesDisadvantagesOrchidWasp The orchid is certain to be pollinated.They are totally dependent on each other for survival.The female wasps collect a chemical from the orchid needed to at

10、tract the males to them.2021/4/2014Discussion Discuss what you think would happen to the animal pollinators of each of the plants described if these plants died out.4 42021/4/2015Suggested answers:The yucca and the yucca moth: If yucca plants died out, the Yucca moth would also die out as the caterp

11、illars need the yucca seeds for food.2021/4/2016 The Travellers palm and the Madagascar black lemur: If the Travellers palm died out, the Madagascar black lemur would not die out as it can find other sources of food.2021/4/2017 The Ophrys orchid and the wasp: If the Ophrys orchid died out, the wasp

12、would also died out as the female wasp needs the chemical produced by the orchid to attract the male wasps.2021/4/20189、 人的價(jià)值，在招收誘惑的一瞬間被決定。2022-3-92022-3-9Wednesday, March 09, 202210、低頭要有勇氣，抬頭要有低氣。2022-3-92022-3-92022-3-93/9/2022 11:51:53 PM11、人總是珍惜為得到。2022-3-92022-3-92022-3-9Mar-229-Mar-2212、人亂于心，不寬余請(qǐng)。2022-3-92022-3-92022-3-9Wednesday, March 09, 202213、生氣是拿別人做錯(cuò)的事來(lái)懲罰自己。2022-3-92022-3-92022-3-92022-3-93/9/202214、抱最大的希望，作最大的努力。2022年3月9