用下列的一种全等多边形一定能密铺的是 [ ]
A．四边形
B．五边形
C．七边形
D．八边形
答案：A
焦虑是由紧张、不安、焦急、忧虑、恐惧交织而成的一种情绪状态。中学生常见的焦虑反应是（ ）。
A．生活焦虑
B．睡眠障碍焦虑
C．交友焦虑
D．考试焦虑
(2013·皖南八校模拟)The band was very successful in the seventies, most of
members were in their twenties.
A．its
B．whose
C．whom
D．which
