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  3. Our planet is like a bit spaceship. Our atmosphere acts【51】a shield against

Our planet is like a bit spaceship. Our atmosphere acts【51】a shield against

游客2025-03-24  10
问题     Our planet is like a bit spaceship. Our atmosphere acts【51】a shield against harmful radiation and space debris.【52】holds the air and people on the spaceship,【53】everything doesn’t float away. Each of us is an astronaut and our spaceship, the earth, provides our food and water. The sun is our energy【54】and without it we would not be able to survive.
    【55】every spaceship, the earth is a closed system. The only thing we receive from the outside is energy from the sun. Everything else must be used【56】again. We astronauts don’t seem to realize that this spaceship is the【57】one we’ve got. We【58】its resources and waste the energy the plants have stored from the sun. If we【59】our spaceship, we will destroy ourselves as well. Maybe if we look at the universe which surrounds us, we will appreciate our own spaceship more and take【60】care of it. [br]
选项 A、damage
B、harm
C、destroy
D、mutilate
答案 C
解析 本题四个选择项所给的动词都有“损害，破坏”的意思，但damage意为“使受到损害”，程度较轻。harm常常表示伤害有生命的东西。mutilate意为“伤害致残”，在这里均不合适，只有destroy是最佳选择。
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