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It remains a mystery how Theobroma cacao, which scholars believe originated in lowland Amazonia, was introduced to tropical Mesoamerica. It must have been a (i)_____ process: cacao trees do not easily sprout from seed, need years to mature, and grow only in humid lowland forest. Moreover, in a tropical climate, cacao pods spoil quickly, rendering their transport from lowland Amazonia tropical Mesoamerica in a single journey by foot or canoe (ii)_____.
- Blank(i)
- clandestine
- protracted
- spontaneous
- Blank(ii)
- unlikely
- redundant
- expeditious
protracted , unlikely 显示答案
以上解析由 考满分老师提供。
