The theory of the origin of the universe is just ______ and lacks proof.

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问题 The theory of the origin of the universe is just ______ and lacks proof.

选项 A、spontaneous
B、hypothetical
C、intuitive
D、empirical

答案B

解析 hypothetical假设的;spontaneous自发的;intuitive直觉的;empirical凭经验的。句意:宇宙起源的理论,只是一种假设,还缺乏证实。
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