3. 为什么会有这样的差别？

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2. 找出两篇文章中写相同内容的语句，比较两者在语言上有何相似及区别。

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1.《瀚海蜃景》和《沙漠里的奇怪现象》两篇文章在表达方式上有何区别？

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4.鸣沙山为什么成为当地人崇拜的对象？

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3.为什么“魔鬼的海”经常出现在大戈壁夏天日中？

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2.孟奇把“魔鬼的海”的形成原因归结于什么？

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1沙漠是这样荒凉，空中看不见一只飞鸟，地上看不到(看不见)一只走兽。

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2这一魔鬼的幻术(魔术)到了19世纪初叶，才被法国数学家和水利工程师孟奇所戳穿(揭露)。

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二根据对本文的理解，回答以下问题。

1.作者在文中解说了沙漠的几种奇怪现象？

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[课堂作业]

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