A:2
B:3
C:4
D:5
I can tell you more about Thanksgiving Day.(变为否定句)
I ____ ____tell you more about Thanksgiving Day.
“开学了,我是一名中学生了!”面对新学校、新班级、新同学和新生活,墨墨兴奋雀跃。据此回答下列小题。
654321078≈____亿
复平面上复数z1与z2的对应点关于直线y=x对称,且z1·z2=4i,则z1为( )