Astronauts eat freeze-dried foods from plastic bags. Freeze-drying is a special __43__ that
removes moisture from foods that have been quick-frozen. When food is treated in this way, it lasts for a long time without spoiling. It is also lightweight and easy to pack in a spacecraft,
where every ounce and every inch count. When an astronaut is ready to eat, he uses a
special__44__to inject water into the package. The water he injects replaces the __45__
moisture that was removed from the food. Now the freeze-dried food will taste__46__fresh food. The astronaut can use hot or cold water for his meal. He can have hot soups as well as cold drinks.
【題組】44
(A) advice
(B) device
(C) notice
(D) service