【简答题】London has always been known for its 'black fogs'. In the winter of 1952, a milky white fog rolled into the city. As the smoke poured into the air, it was so hard to see that people had to walk in fro...
【简答题】London has become a cycle friendly zone after the launch of a new bike hire scheme.It has been designed to encourage more people to cycle in and around central London. So how does it work?First you h...
【判断题】The tale of polluted London has been a very long one, spanning well over two centuries. Beijing cannot take that long; it would be a catastrophe for China and indeed for the whole planet.