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By reordering the sentences in the problem and adding distracting figures, the professor successfully _____ a previously easy exam question and made it almost impossible to solve.
- A.engendered
- B.muddled
- C.interpreted
- D.erased
- E.obliterated
- F.obfuscated
B,F显示答案
以上解析由 考满分老师提供。
