代表秦汉雕塑艺术水平，有“世界第八大奇迹”之称的艺术是：[ ]
A．秦长城
B．洛阳白马寺
C．秦始皇兵马俑
D．汉兵马俑
答案：C
---He should have been warned of the danger.
---_______, but he wouldn’t listen to me.
A．So he had
B．So had he
C．So was he
D．So he was
农业生态系统的两类输入能为（）和（）。
