household earns over $200,000 a year, more than triple the national median household income of $55,322.

The high ranking may not come as a surprise to those familiar with it, as it is a master-planned city, designed by the Olmsted Brothers, sons of Frederick Law Olmsted - architect of New York City's Central Park and the Stanford University campus.

CONNECTICUT-Darien

Population: 21,519 Area (total): 60.6 km2

Darien, Connecticut is home to one of the wealthiest and best educated populations in the country. Well over half of all households in Darien earn at least $200,000 a year and about four out of five adults in Darien have abachelor's degree or higher. Nationwide, fewer than one in three adults have a bachelor's degree. A high median income is bolstered (增强)not only by high educational attainment, but also by a strong job market. Just 3.6 percent of workers in Darien were unemployed in 2017, below the 4.7 percent state and 4.4 percent national 2017 unemployment rates.

ARIZONA一Paradise Valley

Population: 13,833 Area (total): 39.98 km2

Most houses in Paradise Valley, Arizona, are worth over $1.3 million, more than seven times the U.S. median home value. Paradise Valley residents are able to afford such expensive houses because of their relatively high incomes. The typical household in the city earns $173,487 a year, one of the highest median household incomes in the country.

Paradise Valley lives up to its name as a popular destination to relax. The town is home to several resorts and a number of golf courses. Located just north of Phoenix and Scottsdale, it is also known for its high-end dining and nightlife.

NEW YORK-Croton-on-Hudson Population: 8,209 Area (total): 28 km2

Croton-on-Hudson is a small village on the eastern bank of the Hudson River, less than 40 miles north of Manhattan. The village is on a train line that goes directly into the city, and largely as a result, more than one in every four workers in Croton-on-Hudson commute using public transit. The village's proximity to New York City contributes to high property values as most homes in the community are worth over half a million dollars.

18. Which area has the most highest population density?

　　A. Palos Verdes Estates B. Darien C. Paradise Valley D. Croton-on-Hudson

19. Which of the following is correct according to the text?

　　A. Croton-on-Hudson has a powerful transport system in the city.

　　B. Paradise Valley is famous for its relaxing and high-quality living environment.

　　C. Darien is home to the best educated populations who have a bachelor's degree or higher.

　　D. Palos Verdes Estates is a master-planned city, designed by the architect of New York City.

20. From which section of the newspaper is the text probably taken?

　　A. Culture B. Travel C. Sports D. Life