题目内容

A．inB．byC．forD．among

A. in
B. by
C. for
D. among

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A．regionsB．areasC．sitesD．venues

A. regions
B. areas
C. sites
D. venues

A．displayB．fossilC．analysisD．collection

A. display
B. fossil
C. analysis
D. collection

A．originalB．contemporaryC．oppositeD．ancient

A. original
B. contemporary
C. opposite
D. ancient

A．obstaclesB．discoveriesC．obligationsD．inventions

A. obstacles
B. discoveries
C. obligations
D. inventions