one chlid policy is good for earth？？？？？

to save the earth ,should study the chinese one child policy
the Canadian press has written that :climatte summit “ we cannot say the truth” too much of earth exalted
According to the vienna...

China mathematical olympiad for primary school pupils title，subtle and underhand

In a paper written 94 natural numbers 1,2,3,4,5,6,7……………………93,94.
drawn to the top two numbers 1,2 and 3 to write them and in the final surface,to become :3,4,5,6,7,………………93,94,3
and then crossed...