问题
选择题
— Were you alone at home yesterday?
— Yes, my children as well as my wife _____ invited to the party. [ ]
A. was
B. were
C. has been
D. have been
答案
答案：B
搜题请搜索小程序“爱下问搜题”
— Were you alone at home yesterday?
— Yes, my children as well as my wife _____ invited to the party. [ ]
A. was
B. were
C. has been
D. have been
答案：B
的正方形线框abcd，在外力作用下，保持ac垂直磁场边缘，并以沿x轴正方向的速度水平匀速地通过磁场区域，若以逆时针方向为电流正方向，下图中能反映线框中感应电流变化规律的图是 ( )