GRE Text Completion: PPO-GRE填空PPO - YT17RDT_0H485OBYQ

The documentation of Earth's biodiversity is complicated by the (i)____________ taxonomists. Those experts in classifying species tend to be (ii)____________ North America and Europe, whereas most of the undocumented biodiversity is likely in the tropics. A. uneven distribution of B. clustered in C. theoretical commitments of D. oblivious to E. professional rivalries among F. exported from