These magnificent ancient buildings（ ）the great intelligence of the labouring people.
A、suggest
B、require
C、demonstrate
D、identify
【正确答案】：C
【题目解析】：本题考查动词辨析。suggest：建议，提议，暗示；require：需要，要求；demonstrate：证明，证实；identify：识别，鉴定，认定。句意：这些宏伟的古建筑证实了劳动人民的伟大智慧。故C选项符合题意。
