OG5 阅读 Q51

Choice A is the best answer. The previous question asks what the passage suggests about the mental athletes' success with memorization, with the answer being that they use parts of the brain that most other people don't use when memorizing. This is supported in lines 66-72("Surprisingly... first"): "Surprisingly, when the mental athletes were learning new information, they were engaging several regions of the brain known to be involved in two specific tasks: visual memory and spatial navigation, including the same right posterior hippocampal region that the London cabbies had enlarged with all their daily way-finding." 
Choices B, C, and D are incorrect because the lines cited do not support the answer to the previous question about what the passage suggests about the mental athletes' success with memorization. Instead, they acknowledge that Maguire's findings seem odd (choice B), describe how Maguire first responded to the results (choice C), and explain things that don't account for the mental athletes' ability (choice D).