ing the animals. There are about 315 species of animal in the zoo, of which some 16 percent are considered to be endangered species.

The River Safari

It is the first of its kind in Asia and features freshwater exhibitions and a river boat ride as its main highlights. The River Safari, features 10 different ecosystems around the world, including the River Nile, Yangtze River, Mississippi, Amazon as well as the Tundra and has 300 species of animals, including numerous endangered species.

Sentosa

The tourist island of Sentosa, which attracted 19 million visitors in 2011, lies in the south of Singapore and consists of about 20-30 landmarks, such as Fort Siloso, which was built to defend against the Japanese during World War II.

21. Where would the tourists interested in food like to go?

A. The Orchard Road district.              B. The Singapore Zoo.

C. The River Safari.                      D. Sentosa.

22. What is special about the Singapore Zoo?

A. All the animals there are threatened species.         B. There are about 315 animals in the zoo.

C. Animals there are not caged.                      D. People can play with animals.

23. Where can the passage be probably taken from?

A. A text book.                            B. A travel handbook.

C. A website about science news.              D. An entertainment magazine.