Ⅰ．阅读理解
(2022·日照二模)Located off the coast of Croatia, in the Adriatic Sea, Baljenac is a tiny island covered by a series of drystone walls that make it look like a giant fingerprint when seen from above．
The ovalshaped island of Baljenac is covered by a 23kilometrelong network of drystone walls．You'd think it was an ancient labyrinth (迷宫), if not for the fact that the walls are about waist high and designed only to make agriculture easier in an unfriendly place．The rocky land and strong winds aren't exactly perfect for the growth of plants, so the natives of the nearby island of Kaprije built these stone walls to separate their crops and offer them some protection．It's a technique used in other parts of Europe, like England or Ireland, but nowhere else do these walls copy the pattern of a human fingerprint as they do on Baljenac Island．
The uninhabited island has a surface of only 0.14 square kilometres but features 23 kilometres of walls created simply by piling rocks on top of each other．The same type of walls are used on Kaprije and Zut, but Baljenac has by far the highest concentration by surface area．
Most of the stone wall network is believed to have been built during the 19th century, but both Baljenac and Kaprije served as safe shelters for some people during the 16th and 17th centuries, so some parts of the wall could be even older．
Ever since aerial photos of Baljenac started spreading on the Internet, the popularity of the fingerprint island has grown considerably．Although locals welcome visitors, some worry about the damage suffered by the walls at the hands of illmannered tourists．
The Croatian government has requested that UNESCO include this island in its list of world heritage sites, which will not only boost its popularity even more but also guarantee Baljenac higher protection from the local authorities．
1．Why were the drystone walls built on Baljenac?
A．To protect crops from animal attacks．
B．To make it easier to grow crops．
C．To attract tourists to the island．
D．To serve as a cultural symbol．
2．What are some locals concerned about?
A．The strong winds from the sea．
B．The lack of protection from UNESCO．
C．The collapse of the stone walls．
D．The damage done to the walls by tourists．
3．What is the purpose of the text?
A．To introduce a famous fingerprint island．
B．To make an advertisement for a special island．
C．To find out the secret of the fingerprint island．
D．To call on people to protect the stone walls on Baljenac．
4．Where does the text most probably come from?
A．A travel website．
B．A science report．
C．A history book．
D．A financial magazine．
