22 It is burning hot in Mali, an island country in Africa, where the highest temperature even reach 55℃, while the average temperature of the whole year there maintains (维持) above 45℃. But to our great surprise, the tourism (旅游线) there is getting very well. Nearly all the year round the tourists can be seen coming and going.

That is because there are a large number of “In-the-Well Hotels” in Mali. It means that first of all, people have dug a thirty-metre-deep well under very hot land surface, then in the wall of the well several empty caves, about two metres high each, are made. In these caves beds are arranged.

Obviously, In-the-Well Hotel, not as hot as it is out of the well, remains only about 12~20℃. In the cave rooms, tourists can find all the daily necessaries.

It not only frees the guests of the country from the hot weather but also gives them a new and fresh experience. So it is appealing(吸引人的) to the tourists coming all parts of the world.

The best title for this passage should be ________.

A Mali, a Burning Hot Country

B Tourism in Mali

C The Well Hotel

D A way to Develop Tourism

Key:C