在世界众多的组织中，只有哪个组织可以发行邮票？（）
A.世贸组织
B.世卫组织
C.联合国
D.欧共体
E.东盟
参考答案：C
He has been _______ for three weeks. We’d better find another person to fill his place.
A．absent
B．left
C．gone
D．resigned
0.73和0.730的计数单位不同。[ ]
better find another person to fill his place.