不属于兴奋状态的是()
A.紧张性木僵
B.青春性兴奋
C.紧张性兴奋
D.器质性兴奋
E.躁狂性兴奋
参考答案:A
下列命题的逆命题为真命题的是( )
A.对顶角相等
B.角平分线上的点到这个角的两边的距离相等
C.如果两个实数相等,那么它们的平方相等
D.全等三角形的面积相等
It has been announced that candidates remain in their seats until all the papers have been collected.
A.shall
B.can
C.should
D.must