—It's Mid-autumn Day today. Don't forget to give my best wishes to your family.
—__________. Thank you very much.
A:OK, I will
B:Yes, I do
C:No, I won't
D:No, I don't
将三角形绕直线l旋转一周,可以得到如图所示的立体图形的是( )
某粒子含有10个电子,10个中子,电荷为2﹣,则它的化学符号是( )
甲校男生占全校总人数的50%,乙校女生占全校总人数的50%,则甲乙两校女生人数相比( )
有13颗星,每2颗一组,可以分成____组,还剩____颗.
____÷____=____(组)……____ (颗)