题目内容：

    London has a population of about 7000000. From about 1800 until World War Ⅱ. London was the biggest city in the world, but now there are many cities which are much bigger.

London is famous for many things. Tourists come from all over the world to visit its famous buildings and hear the famous clock, Big Ben.

Like many big cities, London has problems with traffic and pollution. Over 1000000 people a day use the London underground, but there are still too many cars on the streets. The air isn’t clean, but it is cleaner than it was 100 years ago.

For me, the best things about London are the parks. There are five in the city center. But my children’s favorite place is Hamleys, the biggest toy shop in the world!

1.What’s the Chinese for “population” in this passage?

A.污染 B.人口 C.车辆 D.流行

2.What’s Big Ben in London?

A.It’s children’s favorite toy shop. B.It’s the best park in the city center.

C.It’s a famous clock. D.It’s a nice museum.

3.How many people use the London underground every day?

A.7,000,000 B.More than 1,000,000 C.1,000,000 D.1800

4.How was the air in London one hundred years ago?

A.It was much cleaner. B.It was the same.

C.It was the cleanest. D.It was dirtier than it is now.