(共22张PPT)
Passage 2
Wan Hu
the first “astronaut” in the world
Space exploration
New worlds to explore
telescope
plant
望远镜
工厂
press release
望远镜
astronaut
pipeline
atmosphere
Check the homework
Para 1
experiment
explore
exploration
mission
announcement
partner with
agency
be said to do
heat
estimate
rocket
component
land
Para 2
concept
lunar
transport
oxygen
base
construct
repair
solar system
unveil
gravity
thick
Para 3-4
Para 5
Para 6
实验
探讨
勘探
任务
公告
合作
机构
据说
热
估计
火箭
成分
土地
概念
月球的
运输
氧
基地
构建
修
太阳系
揭幕
重力
厚
Living and doing experiments in space, exploring the moon and Mars, reaching out into deep space with giant telescopes... These space missions may no longer be surprising. What are the next steps for space exploration NASA’s recent announcements may give us a hint.
What’s the passage about
In which para can we learn it
Which are the topic sentences
Show time
Show your mind map
In late January, NASA announced that it had partnered with another US agency to build nuclear thermal rocket engines (核热火箭引擎).
With the current technology, a trip to Mars will take about seven months – the journey is about 480 million kilometers, according to NASA.
“Reducing transit time (航程时间) is a key component for human missions to Mars, as longer trips require more supplies and more robust (稳健的) systems,” NASA said in a press release.
…released on Jan 10 also revealed some exciting plans. As the agency’s lunar operations proceed, scientists wish to build an oxygen pipeline at the moon’s South Pole.
The agency also aims to explore other places in the solar system.
Show time
Show your mind map
What advantage would nuclear engines have over the current technology
A. They would be more eco-friendly.
B. They would shorten travel time.
C. They would be more cost-effective.
D. They would be safer and more stable.
Para 3: With the current technology, a trip to Mars will take about seven months – the journey is about 480 million kilometers, according to NASA. Although there is no estimated time for a trip with nuclear engines, such rockets would lead to a shorter time for space travel, thus reducing risk for astronauts, according to The Guardian.
2. What is the purpose of building an oxygen pipeline at the Moon’s South Pole
A. To explore sources of oxygen. B. To reduce oxygen consumption.
C. To carry oxygen to the lunar base. D. To produce oxygen for astronauts.
Para 5, line 3: The 5-kilometer pipeline is designed to transport oxygen from a production source on the moon to the future lunar base where astronauts live. It would be both constructed and repaired by robots.
3. What do we know about Titan
A. Its surface temperatures are high.
B. It has seas and lakes of methane.
C. It has a thin atmosphere and low gravity.
D. It’s the largest moon in the solar system.
Para 6: The agency also aims to explore other places in the solar system. Designs for a space plane called TitanAir have recently been unveiled. It aims to investigate Saturn’s largest moon Titan – an icy world whose surface is completely obscured (遮蔽) by a golden atmosphere. The plane will “land on the seas of Titan like a flying boat – except ‘boat’ implies water, and on Titan the lakes are made of methane (甲烷)”, announced NASA. The agency added that flying on Titan would be relatively easy thanks to its low gravity and thick atmosphere.
Think and share
What is the significance of space exploration
to show our national confidence and strength;
to win the international status;
to meet people’s ever-growing curiosity;
to expand technology, create new industries…
Language study
1. What are the next steps for space exploration NASA’s recent announcements may give us a hint.
太空探索的下一步是什么？NASA最近的声明可能会给我们一个提示。
hint: something that you say or do in an indirect way in order to show sb what you are thinking 暗示；提示；示意
Language study
2. Although there is no estimated time for a trip with nuclear engines, such rockets would lead to a shorter time for space travel, thus reducing risk for astronauts, according to The Guardian.
3. Reducing transit time (航程时间) is a key component for human missions to Mars, as longer trips require more supplies and more robust (稳健的) systems.
Language study
Language study
4. As the agency’s lunar operations proceed, scientists wish to build an oxygen pipeline at the moon’s South Pole.
Language study
5. The agency also aims to explore other places in the solar system. Designs for a space plane called TitanAir have recently been unveiled.
该机构还致力于探索太阳系中的其他地方。一架名为TitanAir的太空飞机的设计最近已经公布。
unveil: 1) to remove a cover or curtain from a painting, statue, etc. so that it can be seen in public for the first time 为…...揭幕；揭开…...上的覆盖物
2) to show or introduce a new plan, product, etc. to the public for the first time
（首次）展示，推出
e.g. They will be unveiling their new models at the Motor Show.
