读黄河流域图及材料，回答问题。

材料：

    黄河发源于青藏高原，其干流呈巨大“几”字形，曲折向东流入渤海。黄河是中 * * 的“摇篮”，为中 * * 的发展做出了重大的贡献。例如人们利用黄河水灌溉、发电，还开发了许多旅游资源。但是黄河也给人们带来了许多灾难。例如黄河是世界上含沙量最大的河流；黄河流域旱涝灾害严重，民间对此有“大雨大灾、小雨小灾，无雨旱灾”的描述；黄河在春季易发生凌汛，在干旱严重时下游出现断流现象。

（2）黄河中游流经_______高原，水土流失现象严重。除水土流失外，请列举黄河流域还存在哪些其他灾害（举1例）_______________。

（3）你能为治理黄河提出一些建议和方法（至少2条）。

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用所给形容词或副词的正确形式填空。

1.—Who studies______in your class?

   —Yang Lin and Li Lu. They study as as each other. (well)

2. It's______for me to live in the new house than in the old one. (comfortable)

3. This question is the______one of all. I think you can answer it.(easy)

4. I think winter is the______season in a year. (bad)

5. This story is______, but that story is than this one. (interesting)

6. Zhang Hua runs______than any other boy in his class. (fast)

7. If you want to learn English better, you must practice______.(much)

8. Li Hong doesn't write so______as Wang Fang. (carefully)

9. It is much______ in the south than in the north. (hot)

10. Farmers are______in autumn. (busy)