143. Recently discovered fossil remains strongly suggest that the Australian egg-laying mammals of today are a branch of the main stem of mammalian evolution rather than developing independently from a common ancestor of mammals more than 220 million years ago. (A) rather than developing independently from (B) rather than a type that developed independently from (C) rather than a type whose development was independent of (D) instead of developing independently from (E) instead of a development that was independent of Choice B, the best answer, correctly uses the construction mammals ... are a branch... rather than a type, in which the terms compared by rather than are grammatically parallel nouns. Choices A and D fail to parallel branch with another noun, instead following rather than or instead o/with the verb phrase developing independently from.... In C, the expression a type whose development was independent of a common ancestor states the opposite of the original point_that the type of mammal mentioned was thought to have developed independently of the main stem of mammalian evolution, but still to have descended from a common ancestor. Choice E repeats the error of C, further straying from the intended meaning by referring to the type as a development. 我怎么看不出来C选项有still to have descended from a common ancestor的意思呢? |