Such animals as South China tigers are believed _________

Such animals as South China tigers are believed __________ ., for we've had ...

作者: tihaiku 人气: - 评论: 0

问题 Such animals as South China tigers are believed __________ ., for we've had no track of them for ages.

选项 A．becoming extinct B．to become extinct C．to have been extinct D．having been extinct

答案 C

解析考查时态和语态。当believe为被动语态时，后面习惯接不定式。根据后半句“for we’ve had no track ofthem for ages”判断，时态应为现在完成时，extinct“绝种的，灭绝的”。故选C。

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Such animals as South China tigers are believed __________ ., for we've had ...

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