答案：【解析】：这是一道阅读理解判断题，需要阅读关于沙漠重要性的播客脚本，并根据脚本内容判断每个句子的真假或是否提及。题目考查的是对文章内容的理解和判断能力。
1. 第一个句子“The podcast host has visited several deserts.”在原文中没有提及，因此答案为NM。
2. 第二个句子“About one fourth of the world’s land is covered by deserts.”与原文中“Deserts cover about one third of the planet’s land.”相矛盾，因此答案为F。
3. 第三个句子“Deserts make climate change much worse.”与原文中“Deserts can help slow down climate change and keep the planet’s temperature balanced.”相矛盾，因此答案为F。
4. 第四个句子“Deserts can help us understand the past.”与原文中“Deserts also have objects from ancient societies. In this way, deserts help us learn about the past.”相符，因此答案为T。
5. 第五个句子“Deserts could be an important source of energy in the future.”与原文中“Since deserts get so much sunlight, they could be a great place to get solar energy. Deserts could power our future!”相符，因此答案为T。
【答案】：
1. NM
2. F
3. F
4. T
5. T