30. The United States of America is one of the most developed countries in the world. It lies between two great oceans, the Atlantic to the east and the Pacific to the west. Its neighbor countries are Canada on the north and Mexico on the south. Washington is its capital while the east coast city---- New York is its biggest city, which is also known as the “Big Apple”, where the United Nations’ building stands. The United States is made up of 50 states, which covers over nine million three hundred and sixty thousand square kilometers and has a population of about two hundred and thirty millions, most of which are workers. The earliest inhabitants in the United States are Indians. As the United States of America is a immigrant country, people often call it a “ Melting Pot”

29.　 Xiao Mao is a primary school student and he enjoys drawing very much. One day he went to the small woods not far from town to draw from nature, carrying a drawing board. He was glad to find a tree living although the rest had been cut down. “ Let me start work at once.” He thought and began to set up his board. Just then a strong young man came with a big axe and got down to cutting the tree. Soon he cut it down and pulled it away. When Xiao Mao got ready and turned back to draw, he found the tree had disappeared. “Dear me! Where on earth is the tree?” Xiao Mao wondered, very disappointedly.