题目内容：

One of the most exciting and interesting international cities to visit is London, England. Here is a look at four free things to do during a vacation to London.

Visit the Trafalgar Square

Built more than 200 years ago, Trafalgar Square is a popular gathering place for locals and travelers, too. The area is close to good shopping and dining opportunities, and there are usually some sorts of public events or celebrations going on there during most weekends.

Wander Along the Thames

Visitors wanting to see some great architecture, attractions and views should spend an afternoon walking along the River Thames. The best place to start is at the world-famous London Bridge crossing over the river and you can walk all the way to Westminster Bridge a short distance away. Travelers doing this will find themselves passing by a great many historic buildings.

Explore the Local Markets

While purchasing items at any of the open markets in London is not necessarily free, walking through them to view the merchants, their products and the other shoppers is of great fun. Some of the popular open markets in London worth visiting include Spitafields Market, Portobello Road Market and Leadenhall Market.

Visit the British Museum

One of the top museums in the entire United Kingdom can be found in London, and it charges no admission for entry. This museum is so highly regarded that it is not only popular with locals and tourists, it is also seen as a major and valuable scholarly resource.

1.What can we know about the Trafalgar Square?

A. It borders the Thames.

B. It has a history of over three centuries.

C. There are many factories around it.

D. From here visitors can easily do some shopping.

2.What will attract visitors, attention while they’re walking along the Thames?

A. Famous buildings.    B. Local products.

C. Great restaurants.    D. Some old tree.

3.We learn from the text that       .

A. London Bridge is fur from Westminster Bridge

B. Portobello Road Market is located in Manchester

C. visitors should pay some money to enter the British Museum

D. the British Museum is a major and valuable scholarly resource