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题目材料：
Until recently, study of motor control in amphibian feeding was limited to a few model taxa (taxonomic groups), for example, toads (genus Bufo), frogs ( Rana), and salamanders(Ambystoma). Studies of these taxa suggested that amphibian feeding in general is highly stereotyped, that is, performed in much the same way every time, with little variation in the timing or extent of movements. However, recent studies of a great variety of salamanders, frogs, and caecilians (tropical amphibians) have revealed that the model taxa are probably exceptions among amphibians, and were unfortunate models on which to base generalizations about amphibian feeding. Indeed, Bufo is now known to be one of the most stereotyped amphibians in its feeding movements,and Ambysfoma lies at the low end of variation for salamanders.
以上解析由 考满分老师提供。
