task2：
In the last century， human beings walked on the moon for the first time. It was a great step for mankind.But in fact it has made little difference to most people's lives today. To what extent do you agree or diagree with this opinion？
In the last century， human beings walked on the moon for the first time. It was a great step for mankind.But in fact it has made little difference to most people's lives today. To what extent do you agree or diagree with this opinion？