顺次连结菱形各边中点所得的四边形是[ ]
A.矩形
B.菱形
C.正方形
D.平行四边形
答案：A
Some of Spielberg’s most successful movies came from _______
A.making children laugh
B.almost everything
C.a lot of money
D.his childhood memories
E.telling scary stories
F.a number of reasons
简述文书工作者应具有的业务工作素养。
