Prado at Paseo del Prado from 24 June to 5 October.

　How to go?

　The widest range of flights is offered by EasyJet－from Bristol, Edinburgh, Gatwick,Liverpool and Luton. British Airways and its sister airline Iberia combine forces from Heathrow and London City. Ryanair flies from Manchester and Stansted; Air Europa flies from Gatwick.

　Barajas airport is 13km north-east of the city centre and is served by frequent trains on Metro line 8, but the shortest underground journey is a bit complex with at least one change at Nuevos Ministerios station and takes about 30 minutes. The fare to any station in the city centre is €4.50. The airport express bus runs every 15 to 35 minutes around the clock; €5 one way. It takes 40 minutes to reach the city centre. A taxi takes half the time. A flat rate of €30 covers most of central Madrid.

21. When will the exhibition about Picasso close?

　　A. On 23 March. B. On11 May. C. On 24 June. D. On 5 October.

22. Which airline operates flights from Manchester to Madrid?

　　A. Easy Jet. B. Ryanair. C. Air Europa. D. British Airways.

23. What is the fastest way to reach central Madrid from Barajas airport?

　　A. Take a taxi. B. Take a city bus.

　　C. Take Metro line 8. D. Take the airport express bus.

　B

　On a cool morning, Wilson Kasaine heads out along a dirt path in southern Kenya. His calmness makes it easy to forget that he's tracking one of the most dangerous animals in the world. Kasaine is tracking lions－especially one lion called Marfi.

　Tracking lions on foot may sound like a death wish, but Kasaine has been doing it for most of his life. Born into a traditional Maasai family, he grew to understand the beauty and dangerous situation of wildlife. Living with big wild animals forces him to develop a good sense of where they have been and where they may be going. During his 12-kilometer walks to and from school, he learned how to tell the paw prints of a lion from those of other animals.

　Growing up, Kasaine knew that improving his tracking abilities would help him avoid surprise meetings with dangerous animals. For many Maasai, tracking is mainly a matter of self-protection. But Kasaine is tracking lions to meet them and to protect them. He leads a small group of wide-eyed tourists in the red sandy path, searching for the lion's prints that have left upon it.

　Each year, thousands of tourists crowd Kenya's national parks to try to have a look at the"big five":elephants, rhinoceros, leopards, buffaloes and lions. The international attention drawn to these animals matters a lot because the nation's economy is tied to the protection of its wildlife. If Kenya's wildlife disappears, so does its second-largest source of income.

　Wildlife protection efforts in Kenya meant marking off land specially for animals. But it also meant that the people who had originally lived in the area were forced to leave their land. They are also finding it increasingly hard to keep a traditional Maasai lifestyle. But people are glad that it really makes a difference to wildlife protection.

24.How did Kasaine track lions?

　　A.By working together with tourists. B.By running after them all the time.

C.By going to school every day. D.By studying their paw prints.