外研版（2019） 选择性必修第一册 Unit 5 Revealing Nature Words and Starting out 课件-(18张ppt)

(共13张PPT)
Revealing Nature
distant adj.→__________ n.距离 →_______________ adv.遥远地;疏远地,冷漠地
syn.
2. disgrace n.→______________adj.丢脸的，可耻的
→_______________ adj.被人唾弃的
→__________ n.优美,优雅→_____________adj.优雅的
syn.
3. evolution n.→________________ adj.进化的，演变的
→_________ v. 进化，进化形成；逐渐形成，逐渐演变
4.generate v.→________________ n.一代,一辈;产生
distance
distantly
disgraceful
disgraced
grace
graceful
evolutionary
generation
evolve
remote， faraway
shame
6. characteristic n.→________________n.角色,字符 →________________ v.是...的特征；以...为类型
decline v.→ (近)______________________________
gaint adj.→ (近)______________________
detect v.→____________ n.侦查,探测;发觉,发现;察觉→___________n.侦探→__________ n.检测器;探测器;侦察器
link v. 把···连接起来；联系，相关联；n.联系，连接；关系，纽带；交通路线 →（近）___________________
reduce, decrease, cut down
detection
detective
detector
character
characterize
huge, enormous, vast
connect， associate
Starting out
Komodo dragon:(科莫多巨晰）
Komodo dragons were first encountered by Western researchers in 1910. The researchers said the ancestor of the Komodo dragon most likely evolved in Australia and spread westward, reaching the Indonesian island of Flores 900,000 years ago.
encountered遭遇（近：meet with, run into）
偶遇，邂逅（近：come across）
Duck-billed platypus（鸭嘴兽）
The first scientists to examine a preserved(保藏的) platypus body judged it a fake in the late 18th century. The oldest discovered fossil of the modern platypus dates back to（追溯到） about 100,000 years ago.
preserve v.保护，维护，贮存
n. 动物保护区
Nautilus（鹦鹉螺）
Fossil（化石） records indicate that the nautilus has survived relatively（相当地，相对地） unchanged for around 500 million years. That is why it is often given the name “living fossil.”
Watch the video and answer the questions.
1.How can seeds travel
2. How can this benefit plants
V 传播，移动
How seeds travel
How can seeds travel
Seeds cane travel great distances by being carried by the _________ , upon the ____________, __________ or __________.
wind
water
animals
people
2. How can this benefit plants
Seeds have a ________(better/worse) chance at life when they are _______(closer/further) away from their parent plant. Growing too ______(far/close)to the parent plant means seeds might not get enough____, _______and nutrients from the _____. A species is _____(more/less) likely to _______ if its members are more ________(closely/widely) spread.
better
further
close
sun
water
soil
more
survive
widely
Example Carried by Feature How
Maple seeds Wings that spin and keep them in the ______ for longer, allowing them to ________ in all kinds of places Depending on the strength of the _____, they can sometimes travel for _________ ____ kilometers
Coconuts Its hard shell allows it to _______ on the water for a long time. When a coconut _______from a tree onto the beach, the sea picks it up and carries it away to _______somewhere else
Cherry Many plants produce fleshy fruits that animals like to ________ Animals move especially ________, so the seeds can easily end up a _______way from the parent plant.
Example Carried by Feature How
Maple seeds Wings that spin and keep them in the ______ for longer, allowing them to ________ in all kinds of places Depending on the strength of the _____, they can sometimes travel for _________ ____ kilometers
Coconuts Its hard shell allows it to _______ on the water for a long time. When a coconut _______from a tree onto the beach, the sea picks it up and carries it away to _______somewhere else
Cherry Many plants produce fleshy fruits that animals like to ________ Animals move especially ________, so the seeds can easily end up a _______way from the parent plant.
wind
ocean
currents
animals
air
land
wind
hundreds
of
float
falls
grow
eat
birds
long