下列哪种材料是最理想的印模材料()
A．藻酸钾
B．藻酸钠
C．硅橡胶
D．印模膏
E．印模石膏
参考答案：C
—I’m sorry, I shouldn’t have been so rude to you.
—You ________ your temper but that’s OK.
A．have lost
B．had lost
C．did lose
D．were losing
07和0.8之间的两位小数只有9个．______．
