功能益气温经散寒的配伍药组是( )
A．桂枝芍药B．干姜甘草C．黄芪桂枝D．白术干姜E．当归桂枝
参考答案：C
Without facts, we can’t form a correct opinion, for we need to have actual knowledge___ our thinking.[ ]
A. which to be based on
B. which to base on
C. on which to base
D. which to base
从一个长8分米、宽6分米的长方形纸上，剪下一个最大的圆，圆的面积是______平方分米．
