属于碳苷的是（）
A.香豆素苷
B.苦杏仁苷
C.芦荟苷
D.黑芥子苷
E.巴豆苷
参考答案：C
解析：芦荟苷为碳苷，所以答案为C。
雕刻黄油雕要求室温在（）左右。
A.25摄氏度
B.20摄氏度
C.15摄氏度
D.10摄氏度
Compared to investors with long investment time horizons, investors with short investment time horizons most likely require:（）
A. Less liquidity and less emphasis on capital appreciation.
B. Less liquidity and greater emphasis on capital appreciation.
C. More liquidity and less emphasis on capital appreciation.
