认为艺术起源于原始民族的巫术仪式活动的是______。
A．克罗齐
B．普列汉诺夫
C．马克思
D．爱德华·泰勒
参考答案：D
I was trying to pick up my hat that __________ off in the wind, but failed at last.
A. had been blown . is blown C. blown D. it had been blown
细菌生长繁殖中所需营养物质，其中葡萄糖、淀粉、甘露醇等属于哪一类物质？（）
A.碳源
B.氮源
C.无机盐类
D.维生素类
E.生长因素类
