关于单项式﹣32xy2，下列说法正确的是[ ]
A．次数为3
B．次数为5
C．系数为﹣3
D．系数为9
答案：A
This is not _________ watch. I think it’s _____________ watch. [ ]
A. you, he
B. she, my
C. his, her
D. me, his
气焊火焰中的中性焰焰芯温度大约为（）。
