英语翻译2011年10月31日,世界人口突破70亿,虽然我知道世界上每秒钟就有两个婴儿出生,但我真的很想知道这第70亿个

下面是口语化些的表达,单词都是简单的.
On October 31st,2011,the population of the world has reached 7 billion.（此处reach可用二楼的exceed代替,这个更好,但是书面化了）
Although I know that there are two babies born every second in the world,I am really eager to know how to figure out who is the 7 billionth baby.
One version shows that it is by the records investigated in hospitals in the world.
Another version shows that Little Danica,once hardly dumped as a dead baby,was regarded as the 7 billionth baby to ease the parents' anger.
In regard of the first version,no matter whether you believe it or not,I never believe it.
补充：其实第七十亿个是官方按人口增长速度推算出来的,仅供参考,不具备统计学意义.