题型：阅读选择 题类：常考题 难易度：普通
北京市某重点初中2018年小学六年级下学期英语招生考试试卷（音频暂未更新）
Water is very important to living things. Without water there could be no life on the earth. All animals and plants need water. Man also needs water. We need water to drink, to cook our food and to clean ourselves.
Water is needed in offices, factories and schools. Water.is needed everywhere. There is water in seas, rivers and lakes.
Water is found almost everywhere. Even in the desert of the world, there is some water in air. You can't see or feel it when it is part of air. The water in the seas, rivers and lakes is a liquid(液体). The water in air is a gas, and we call it water vapour (水蒸气).
Clouds are made of water. They may be made of very small drops of water. They may also be made of snow crystals(结晶体). Snow crystals are very small crystals of ice. Ice is frozen water. It is a solid (固体). There can be snow and ice everywhere in winter.
Water may be a solid, a liquid or a gas. When it is a solid, it may be as hard as a stone. When it is a liquid, you can drink it. When it is a gas, you can't see or feel it.
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