A fossil is a remnant of a once-living organism.

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问题 A fossil is a remnant of a once-living organism.

选项 A、bone
B、solvent
C、picture
D、vestige

答案D

解析 remnant遗迹;残余,剩余。vestige遗迹;残余。solvent溶剂;解决方法。picture图片。
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