世界人口70亿
2012-04-29柯楠
英语学习 2012年1期
柯楠
The United Nations declared that the world's population hasreach seven billion. Because censuses are infrequent andincomplete, no one knows the precise date--but there can be
2012-04-29柯楠
柯楠
The United Nations declared that the world's population hasreach seven billion. Because censuses are infrequent andincomplete, no one knows the precise date--but there can be
