（）、石油、和天然气等能源虽然在全球分布不均，但却都是可再生能源
参考答案：煤炭
试求过点P（3，5）且与曲线y=x2相切的直线方程．
仿照例句完成句子。
1. She (brown chair)
She has a brown chair. Her chair is brown.
2. He (red pencil)
________ has a ________ pencil. ________ pencil is ________.
3. We (orange hats)
________ have ________ hats. ________ hats are ________.
4. You (purple bag)
________ have a ________ bag. ________ bag is ________.
5. They (green markers)
________ have ________ markers. ________ markers are ________.
