计算:a3•a4等于( )
A.a7
B.a12
C.3a4
D.4a3
a3•a4=a7.
故选A
丧偶妇女对公婆尽了主要赡养义务的,可以作为公婆的第一顺序法定继承人。这体现了妇女的( )权利。
A.人身;
B.文化教育
C.劳动
D.财产
All the others seemed to know each other and I began to feel .
A.given away
B.fallen behind
C.turned down
D.left out