They had to examine the dead tiger before they were _______ as to who killed it. ( 章节:1 难度:3)
- A、positive
- B、senior
- C、virtual
- D、vital
正确答案:A
答案解析:有

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They had to examine the dead tiger before they were _______ as to who killed it. ( 章节:1 难度:3)

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