Children's lives have changed greatly over the last 50 years．But do they have a happier childhood than you or I did?
It's difficult to look back on one's own childhood without some element of nostalgia(怀旧的). I have four brothers and sisters, and my memories are all about being with them．Playing board games on the living room floor, or spending days in the street with the other neighborhood children, racing up and down on our bikes, or exploring the nearby woods．My parents scarcely appear in these memories, except as providers either of meals or of severe blame after some particularly risky adventure．
These days, in the UK at least, the nature of childhood has changed dramatically．Firstly, families are smaller, and there are far more only children．It is common for both parents to work outside the home and there is the feeling that there just isn't time to bring up a large family, or that no one could possibly afford to have more than one child．As a result, today's boys and girls spend much of their time alone．Another major change is that youngsters today tend to spend a huge amount of their free time at home, inside．More than anything this is due to the fact that parents worry far more than they used to about real or imagined dangers, so they wouldn't dream of letting their children play outside by themselves．
Finally, the kind of toys children have and the way they play is totally different．Computer and video games have replaced the board games and more interesting activities of my childhood．The irony（令人啼笑皆非的事情） is that so many ways of playing games are called "interactive”. The fact that you can play electronic games on your own further increases the sense of loneliness felt by many young people today．
Do these changes mean that children today have a less relaxing childhood than I had? I personally believe that they do, but perhaps every generation feels exactly the same．
What is the purpose of the direct question given in the first paragraph?

A．To show who the passage is written for．

B．To gather people's opinions on childhood．

C．To compare the childhood lives of two generations．

D．To get people's attention and lead in the topic．

Which is NOT a reason for the changes?

A．Families are smaller today．

B．Toys can be played by children alone at home．

C．It's too dangerous to play outside．

D．Parents worried too much about their children.

What has the writer focused on in the fourth paragraph?

A．Some games that young people play today aren't really good．

B．Computer and video games have replaced the board games．

C．Young people today shouldn't play electronic games.

D．Board games are much more interesting than computer games．