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三、书面表达。
地球是我们赖以生存的家园，只有了解它，才能更好地爱护它。请你根据下列提示和本单元的内容，以“Earth”为题用英语写一篇短文，向同学们介绍地球的相关知识。
内容包括：
1. 4.6 billions years old.
2. It is one of the eight planets of the solar system.
3. A diameter of 13,000 kilometers.
4. Oceans cover about 71% of Earth.
5. ...
写作要求：
1. 文中须包含以上要点提示，可适当发挥；
2. 文中不得出现本人的真实姓名或校名；
3. 词数70个左右（开头和结尾已给出，不计入总词数）。
Earth
Earth is our home planet.
Earth is our home. We must love it and protect it.
地球是我们赖以生存的家园，只有了解它，才能更好地爱护它。请你根据下列提示和本单元的内容，以“Earth”为题用英语写一篇短文，向同学们介绍地球的相关知识。
内容包括：
1. 4.6 billions years old.
2. It is one of the eight planets of the solar system.
3. A diameter of 13,000 kilometers.
4. Oceans cover about 71% of Earth.
5. ...
写作要求：
1. 文中须包含以上要点提示，可适当发挥；
2. 文中不得出现本人的真实姓名或校名；
3. 词数70个左右（开头和结尾已给出，不计入总词数）。
Earth
Earth is our home planet.
It was born 4.6 billion years ago. It is one of the eight planets of the solar system. It has a diameter of 13,000 kilometers. The distance from Earth to the Sun is about 150 million kilometers, neither too close nor too far away. It makes Earth neither too cold nor too hot, just right for us to live on. Oceans cover about 71% of Earth's surface and provide plenty of water for us. With enough heat and water, Earth is a perfect place for us to live on.
Earth is our home. We must love it and protect it.
答案
Earth
Earth is our home planet. It was born 4.6 billion years ago. It is one of the eight planets of the solar system. It has a diameter of 13,000 kilometers. The distance from Earth to the Sun is about 150 million kilometers, neither too close nor too far away. It makes Earth neither too cold nor too hot, just right for us to live on.
Oceans cover about 71% of Earth's surface and provide plenty of water for us. With enough heat and water, Earth is a perfect place for us to live on.
Earth is our home. We must love and protect it.
Earth is our home planet. It was born 4.6 billion years ago. It is one of the eight planets of the solar system. It has a diameter of 13,000 kilometers. The distance from Earth to the Sun is about 150 million kilometers, neither too close nor too far away. It makes Earth neither too cold nor too hot, just right for us to live on.
Oceans cover about 71% of Earth's surface and provide plenty of water for us. With enough heat and water, Earth is a perfect place for us to live on.
Earth is our home. We must love and protect it.
解析
【分析】这是一道英语书面表达题，要求以“Earth”为题写介绍地球的短文。解题思路：1. 衔接已给开头“Earth is our home planet.”，按逻辑顺序加入题目给定的所有要点（地球年龄、太阳系行星之一、直径、海洋占比）；2. 适当补充符合逻辑的内容（如地球与太阳的距离，使地球适宜居住）丰富内容；3. 确保词数约70，不出现真实姓名或校名，语法正确，最后衔接已给结尾。
【解析】写作步骤：1. 衔接开头后，依次表述要点：① 说明地球年龄：It was born 4.6 billion years ago.；② 点明地球是太阳系八大行星之一：It is one of the eight planets of the solar system.；③ 介绍直径：It has a diameter of 13,000 kilometers.；④ 适当补充：The distance from Earth to the Sun is about 150 million kilometers, making it neither too cold nor too hot for life.；⑤ 说明海洋情况：Oceans cover about 71% of Earth's surface and provide water for living things.；2. 衔接已给结尾，确保内容连贯，符合词数要求。
【答案】Earth
Earth is our home planet. It was born 4.6 billion years ago. It is one of the eight planets of the solar system. It has a diameter of 13,000 kilometers. The distance from Earth to the Sun is about 150 million kilometers, neither too close nor too far away. It makes Earth neither too cold nor too hot, just right for us to live on.
Oceans cover about 71% of Earth's surface and provide plenty of water for us. With enough heat and water, Earth is a perfect place for us to live on.
Earth is our home. We must love and protect it.
【知识点】英语书面表达、要点整合写作、科普英语词汇
【点评】本题考查学生整合信息、运用英语进行说明性写作的能力，要求结合给定要点适当拓展，既考查基础词汇句型，又注重内容逻辑性，符合初中英语写作的考查方向。
【难度系数】0.3
【解析】写作步骤：1. 衔接开头后，依次表述要点：① 说明地球年龄：It was born 4.6 billion years ago.；② 点明地球是太阳系八大行星之一：It is one of the eight planets of the solar system.；③ 介绍直径：It has a diameter of 13,000 kilometers.；④ 适当补充：The distance from Earth to the Sun is about 150 million kilometers, making it neither too cold nor too hot for life.；⑤ 说明海洋情况：Oceans cover about 71% of Earth's surface and provide water for living things.；2. 衔接已给结尾，确保内容连贯，符合词数要求。
【答案】Earth
Earth is our home planet. It was born 4.6 billion years ago. It is one of the eight planets of the solar system. It has a diameter of 13,000 kilometers. The distance from Earth to the Sun is about 150 million kilometers, neither too close nor too far away. It makes Earth neither too cold nor too hot, just right for us to live on.
Oceans cover about 71% of Earth's surface and provide plenty of water for us. With enough heat and water, Earth is a perfect place for us to live on.
Earth is our home. We must love and protect it.
【知识点】英语书面表达、要点整合写作、科普英语词汇
【点评】本题考查学生整合信息、运用英语进行说明性写作的能力，要求结合给定要点适当拓展，既考查基础词汇句型，又注重内容逻辑性，符合初中英语写作的考查方向。
【难度系数】0.3
