已知AB∥y轴,A点的坐标为(2,1),并且AB=6,则B的坐标为( )。
(2,7)或(2,-5)
Very ______ about toys, Tony was not to be pleased, though I tried to show him one by one.
A.responsible
B.particular
C.special
D.curious
通过无结构小组的交互作用方式来改善行为的方法是( )。
A.敏感性训练 B.质量圈C.团际发展 D.团队建设