若有说明:int a[][3]={{1,2,3},{4,5},{6,7}};则数组a的第一维的大小为( )
A. 2
B. 3
C. 4
D. 无法确定
The band's success has ____hundreds of would-be imitators.
The ____is trying to get the message across to young people that drugs are dangerous.
Elementary school children responded favourably to the robotic teachers, the minister said, ____a survey by educational researchers.