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三、(2025 • 南通市海安市模拟)请认真阅读下面短文，从短文后所给的六个选项中选出五个可以填入空白处的最佳选项。
Astronauts Sunita Williams and Butch Wilmore never imagined that they would spend nine months in orbit. Their first trip to the International Space Station (ISS) in June 2024 was supposed to last just eight days. 1.
Now they are finally returning home. Although they are both experienced astronauts, staying in a low - gravity environment for a long time has probably affected their bodies. 2.
Muscles and bones Without the constant pull of gravity on our arms and legs, muscle and bone mass quickly get weaker. The muscles that are most affected are those that help us keep our posture (姿势), such as those in the back and neck. After just two weeks, muscle mass can decrease by 20%, and by as much as 30% during longer missions.
3.
Weight loss 4.
Eyesight On the Earth, gravity helps pull the blood in our bodies down, while the heart pumps it back up. But in space, this process is influenced. 5.
A. Blood can build up in the head more than it normally would.
B. It is necessary to have a healthy diet in space.
C. Similarly, astronauts' bones begin to get weak and lose strength.
D. But their spacecraft experienced technical problems and had to return to the Earth without them.
E. Keeping a healthy weight is a challenge while in space.
F. Here are some of the effects.
Astronauts Sunita Williams and Butch Wilmore never imagined that they would spend nine months in orbit. Their first trip to the International Space Station (ISS) in June 2024 was supposed to last just eight days. 1.
D
Now they are finally returning home. Although they are both experienced astronauts, staying in a low - gravity environment for a long time has probably affected their bodies. 2.
F
Muscles and bones Without the constant pull of gravity on our arms and legs, muscle and bone mass quickly get weaker. The muscles that are most affected are those that help us keep our posture (姿势), such as those in the back and neck. After just two weeks, muscle mass can decrease by 20%, and by as much as 30% during longer missions.
3.
C
Astronauts can lose 1%~2% of their bone mass per month spent in space and up to 10% over a six - month period. This can increase the risk of fractures (骨折) and the time it takes to recover. It can take up to four years for their bone mass to return to normal after they return to the Earth.Weight loss 4.
E
Although NASA tries to ensure that its astronauts have different kinds of nutritious foods, the low - gravity environment can still affect an astronaut's body. Scott Kelly, a NASA astronaut who took part in the most in - depth study of the effects of long - term space flight after staying on board the ISS for 340 days, lost 7% of his body mass.Eyesight On the Earth, gravity helps pull the blood in our bodies down, while the heart pumps it back up. But in space, this process is influenced. 5.
A
Some of this fluid can pool at the back of the eye and around the optic nerve (视觉神经), causing oedema (水肿). This can lead to changes in vision, such as decreased sharpness and structural changes in the eye itself.A. Blood can build up in the head more than it normally would.
B. It is necessary to have a healthy diet in space.
C. Similarly, astronauts' bones begin to get weak and lose strength.
D. But their spacecraft experienced technical problems and had to return to the Earth without them.
E. Keeping a healthy weight is a challenge while in space.
F. Here are some of the effects.
答案
1~5. DFCEA
