1. (2024·鞍山模拟) 阅读理解
Water purification system(水净化系统)
In the 1960s, NASA created a way to purify astronauts' drinking water by adding silver ions(离子) into the spacecraft's water supply system. This technology is now widely used to help keep the water in swimming pools clean.
Carmera phones
In the 1990s, a team at the Jet Propulsion Laboratory(JPL) worked to create cameras
small enough to fit on spacecrafts. Now lots of cameras use this technology, which makes camera phones possible.
Memory foarm(记忆海绵)
It was developed by NASA in the'1970s to help make pilots' seats more comfortable.
Today memory foam is used to make more comfortable beds, chairs, sofas and even shoes.
Freeze-dried food(冻干食品)
NASA did a lot of research on space food. One important thing was that they found a
way of keeping food—freeze-drying. It keeps 98% of the nutrients(营养物) of the food, but the food weighs about 80% less. Now freeze-dried food is often used by campers and is included in emergency kits(应急包).

（1） The water purification system was created in the ____.

A . 1990s B . 1970s C . 1980s D . 1960s
（2） ____ was created at the Jet Propulsion Laboratory.

A . The small camera B . Memory foam C . Freeze-dried food D . The water purification system
（3） Memory foam was developed for ____ at the beginning.

A . doctors B . cleaners C . pilots D . swimmers
（4） The freeze dried food weighs about ____ of the fresh food.

A . 98% B . 20% C . 80% D . 2%

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Water purification system(水净化系统)	In the 1960s, NASA created a way to purify astronauts' drinking water by adding silver ions(离子) into the spacecraft's water supply system. This technology is now widely used to help keep the water in swimming pools clean.
Carmera phones	In the 1990s, a team at the Jet Propulsion Laboratory(JPL) worked to create cameras small enough to fit on spacecrafts. Now lots of cameras use this technology, which makes camera phones possible.
Memory foarm(记忆海绵)	It was developed by NASA in the'1970s to help make pilots' seats more comfortable. Today memory foam is used to make more comfortable beds, chairs, sofas and even shoes.
Freeze-dried food(冻干食品)	NASA did a lot of research on space food. One important thing was that they found a way of keeping food—freeze-drying. It keeps 98% of the nutrients(营养物) of the food, but the food weighs about 80% less. Now freeze-dried food is often used by campers and is included in emergency kits(应急包).