My daughter will call _______ as soon as she _______ Shanghai.
A:me up, will arrive in
B:up me, arrives at
C:up me , arrives at
D:me up, arrives in
复数(为虚数单位)的虚部是
有下列说法:①任何无理数都可以用分数表示;
②有理数与数轴上的点一一对应;③在1和3之间的无理数有且只有2,3,5,7这4个;④π2是分数,它是有理数.其中正确的个数是( )