题目内容：
困扰我国的生态问题有哪些？
参考答案：
问答题,简答题：困扰我国的生态问题有哪些？
- 题目分类：危险化学品安全管理
- 题目类型：问答题,简答题
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I will finish reading this book in a week.
I will finish reading this book in a week.
I took Mr. John to the village where I had spent my carefree childhood.
I took Mr. John to the village where I had spent my carefree childhood.
I used to live in the countryside.
I used to live in the countryside.
血清胆固醇水平升高可见于（）A．尿毒症B．营养不良C．肾病综合征D．无脂蛋白血症E．巨幼细胞贫血
血清胆固醇水平升高可见于（）A．尿毒症B．营养不良C．肾病综合征D．无脂蛋白血症E．巨幼细胞贫血
He told me that he had bought a book.
He told me that he had bought a book.