A:1个
B:2个
C:3个
D:4个
某化学实验小组要检测黄铜(铜、锌合金)中金属铜的纯度,同学们取20g黄铜样品,向其中分三次共加入15g盐酸溶液,充分反应后测得实验结果如下:
Sue was so _______ her holiday that she couldn't stop talking about it.