题目内容：

The United States is a country of immigrants. It is a place where people from all over the world come to build a better life. Some immigrants bring their families. Some bring a few of their favorite things. Others come alone with nothing but determination. One thing that every immigrant brings with them is their culture.

American immigration began in 1607 with the colony (殖民地) of Jamestown. In 1620, another group of people left England to build a settlement in America. They wanted to go to a place where they could practice their religion freely. Then many more people left their homes in Europe to build a better life in America. Many also came to America from Africa. By 1770, more than two million people had moved to America. Later on, more people came to the United States than ever before.

In cities all over America, you can see different cultures that formed this country. Many things that you may think of as being “American” are actually from a foreign culture. Some of the best examples of this are the foods people eat. Pizza and spaghetti are foods that all Americans know and love. But both of them are from Italy. Baseball is an all-American sport. But the hot dogs that people eat during the game are a type of food that was brought to America by German immigrants.

Over time, pizza and hot dogs have become a part of what is considered to be American food. In the same way, different groups of people have come together to define what an American is. An American can be a person of any background. An American can be of any faith. An American can be of any skin color. They can speak English clearly. They can speak English with an accent. Each new immigrant adds something new to American culture. It will keep changing as more people come to this country.

1.Paragraph 2 is mainly about _____.

A. the history of American immigration

B. why people chose to move to America

C. the rapid growth of the population of America

D. what immigrants have brought to America

2.Several foods are mentioned in the text to show _____.

A. they have a long history in America

B. they are very popular with Americans

C. America is a country full of tasty foods

D. America is made up of different cultures

3.The author probably agrees that American culture is _____.

A. simple          B. strange

C. diverse         D. advanced

4.What would be the best title for the text?

A. Immigrants and their American dreams

B. America: a melting pot of cultures

C. America: a land of opportunity

D. Life in the US: culture shock