They are sure they have all the facts they need to ______the existence of a black hole.

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问题 They are sure they have all the facts they need to ______the existence of a black hole.

选项 A、obtain
B、maintain
C、verify
D、display

答案C

解析 动词辨析 obtain “获得,得到”;maintain“维持;维修;坚持;赡养”;verify“核实,查对,证明,证实”; display“陈列,展览;显示,表现”。
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