Kuwait is a country, which is quite small but very rich. It has a population of a little m

ore than a million, and it is situated at the north end of the Arabian Gulf, which is also sometimes called the Persian Gulf. The land area is about 8,000 square miles. Kuwait's climate is one of the hottest in the world. In the summer, the temperature often reaches 124 Fahrenheit degrees during the day. That's about 51.5 degrees centigrade. Temperatures are naturally cooler during the winter. They range between 50 and 60 degrees fahrenheit.

Until oil was discovered there in 1930, Kuwait was a little-known country. Today this small desert country has become one of the world's leading oil producers: It has approximately 15% of the world's known petroleum reserves.

Since the discovery of oil, Kuwait's rulers have turned the country into a prosperous welfare state. It has free primary and secondary education, free health care and social services; and the people do not have pay any personal income tax for those services. It has become one of the world's richest countries. Though Kuwait has free primary and secondary education for its people, many of them still do not know how to read and write. The University of Kuwait was opened in 1966, but many of the students still study in colleges and universities abroad, at the state expense.

Kuwait is ______.

A．a very old country

B．not famous around the world till 1930

C．hardly known to all

D．well-known for its large amount of sad reserves