因果逻辑练习

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*1. 请填写您的昵称
*2. (1)According to paragraph 3, the abundance of resources fluctuated sharply after the end of the glacial period because 


*3. (2)According to paragraph 2, why were tokens eliminated?


*4. (3)According to paragraph 1, pastoralists in Iran needed to move their animals for which of the following reasons?


*5. (4)According to paragraph 3, why do materials in the countryside have a lower heat capacity than materials in cities do?


*6. (5)According to paragraph 5, surfaces in the city are generally drier than surfaces in the countryside between periods of rainfall because