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In a major step for eco-friendly space travel, Japanese researchers have launched LignoSat, the world's first wooden satellite, using a SpaceX rocket. This innovative mission is part of a supply run to the International Space Station(ISS), where the satellite will be put into orbit soon. The project, a collaboration(合作) between Kyoto University and Sumitomo Forestry, is a big step forward in green space technology.
LignoSat aims to show that wood can be used in space. It will circle the earth for six months, with scientists checking how strong and long-lasting it is under the harsh conditions of space. Wood doesn't rot in space because there's no oxygen or water, which could help solve a big space industry problem: space junk from old satellites falling back to the earth. While metal satellites leave metal bits when they burn up, LignoSat is made to break apart safely, which could help the environment.
Koji Murata, a forest science professor at Kyoto University, says wood's strength without oxygen makes it a good material for spacecraft. This could reduce harm to the earth when satellites return.
The Japan Aerospace Exploration Agency (JAXA) placed the satellite in a special box, ensuring it "flew into space safely". Sumitomo Forestry confirmed the launch was a "success" and that LignoSat will soon reach the ISS before being sent out into space.
( )1. What is the significance(意义) of launching LignoSat?
A. To replace all metal satellites with wooden ones.
B. To test the durability(耐用性) of wood in space conditions.
C. To increase the number of satellites in orbit.
D. To provide more materials for space construction.
( )2. Why is wood considered a potential solution for space junk problem?
A. Wood can burn up completely in the atmosphere.
B. Wood doesn't rot in space due to the lack of oxygen and water.
C. Wood satellites are lighter and easier to control.
D. Wooden satellites can be recycled more easily than metal ones.
( )3. What is one advantage of using wood in spacecraft according to Koji Murata?
A. Wood is cheaper than metal.
B. Wood's strength is maintained without oxygen.
C. Wood is easier to work with than metal.
D. Wood is more abundant than metal on the earth.
( )4. How does LignoSat plan to address the issue of space junk?
A. By using wood, which breaks apart safely.
B. By collecting and recycling space junk.
C. By preventing satellites from falling back to the earth.
D. By reducing the number of satellites launched.
( )5. Where can you probably read the passage?
A. In a science magazine.
B. In a guidebook.
C. In an advertisement.
D. In a novel.
LignoSat aims to show that wood can be used in space. It will circle the earth for six months, with scientists checking how strong and long-lasting it is under the harsh conditions of space. Wood doesn't rot in space because there's no oxygen or water, which could help solve a big space industry problem: space junk from old satellites falling back to the earth. While metal satellites leave metal bits when they burn up, LignoSat is made to break apart safely, which could help the environment.
Koji Murata, a forest science professor at Kyoto University, says wood's strength without oxygen makes it a good material for spacecraft. This could reduce harm to the earth when satellites return.
The Japan Aerospace Exploration Agency (JAXA) placed the satellite in a special box, ensuring it "flew into space safely". Sumitomo Forestry confirmed the launch was a "success" and that LignoSat will soon reach the ISS before being sent out into space.
( )1. What is the significance(意义) of launching LignoSat?
A. To replace all metal satellites with wooden ones.
B. To test the durability(耐用性) of wood in space conditions.
C. To increase the number of satellites in orbit.
D. To provide more materials for space construction.
( )2. Why is wood considered a potential solution for space junk problem?
A. Wood can burn up completely in the atmosphere.
B. Wood doesn't rot in space due to the lack of oxygen and water.
C. Wood satellites are lighter and easier to control.
D. Wooden satellites can be recycled more easily than metal ones.
( )3. What is one advantage of using wood in spacecraft according to Koji Murata?
A. Wood is cheaper than metal.
B. Wood's strength is maintained without oxygen.
C. Wood is easier to work with than metal.
D. Wood is more abundant than metal on the earth.
( )4. How does LignoSat plan to address the issue of space junk?
A. By using wood, which breaks apart safely.
B. By collecting and recycling space junk.
C. By preventing satellites from falling back to the earth.
D. By reducing the number of satellites launched.
( )5. Where can you probably read the passage?
A. In a science magazine.
B. In a guidebook.
C. In an advertisement.
D. In a novel.
答案
B
; B
; B
; A
; A
; B
; B
; A
; A
