帮我翻译几句句子。英语课口语需求，简单流畅翻译就行，谢谢哈！！

Question

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70亿个宝宝是怎么算出来的。
一个版本是说：在全球范围内调查各医院的记录；
另一个版本说：小丹妮卡，一开始差点被当成死婴扔掉，为了平息家长的愤怒，所以把第70亿给了她。
对于第一个版本，不管你信不信，反正我不信。

Answer 1

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。
希望能帮到你！

参考资料：来自【英语牛人团】

Answer 2

On October 31, 2011, man day in the world breaches 7,000,000,000,
Although I know to have two infants every second in the world a birth,
But I really want to know how this 7,000,000,000th baby is calculated out.
A release is to say:The record that inspects each hospital inside the range in the world;
Another release says:The small Dan Ni sticks and was almost seen to throw away for killing a baby in the beginning, for quelling the parent's exasperation, so gave the 7,000,000,000th her.
For no 1 release, whether you believe, anyway I don't believe.

Answer 3

On October31,2011, The population of the world exceeded 7 billion,Although I know that two babies are born every second,I really want to know how does the 70 billion baby come out.
A saying is that :Through a worldwide survey of hospital records;
another saying is that: Small Danica,who was was almost as dead babies thrown away at the beginning, and in order to quell the anger of the parents, so the 7 billion to her.
For the first saying,whether you believe it or not, anyway, I do not believe it.

Answer 4

俄方的