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题目内容
Circulatory systems on organisms originated in widely separated epochs, according to the fossil record, and under a broad range of circumstances, the myriad forms they take attest to that ______ of origin.
- Amysteriousness
- Brandomness
- Cambiguity
- Dheterogeneity
- Eindeterminacy
- Fdiversity
D,F显示答案
以上解析由 考满分老师提供。