题目内容
【题目】There are about 3,900 wild tigers left in the world and the illegal trade is one of the biggest threats to their (幸存).
【答案】urvival
【解析】句意：在世界上大约剩下3900只野生老虎，非法交易是对它们生存的最大威胁之一。形容词性物主代词后面接名词，故填survival。
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题目内容
【题目】There are about 3,900 wild tigers left in the world and the illegal trade is one of the biggest threats to their (幸存).
【答案】urvival
【解析】句意：在世界上大约剩下3900只野生老虎，非法交易是对它们生存的最大威胁之一。形容词性物主代词后面接名词，故填survival。