题目内容：
3、 McDonald’s Corporation (MCD) is one of the leading fast-food restaurant chains in the world, touching the lives of people every day. As the world’s largest chain of restaurants, it primarily sells hamburgers, chicken, french fries, milkshakes, soft drinks, etc. The business began in 1940, with a restaurant opened by brothers Dick and Mac McDonald. Initially, they just owned a hotdog stand. But after establishing the restaurant they served around 25 items, which were mostly barbecued. It became a popular and profitable teen hangout. Their introduction of the “Speed Service System” in 1948 established the principles of the modern fast-food restaurant. The present corporation dates its founding to the opening of a franchised restaurant by Ray Kroc on April 15, 1955. In effect, Kroc opened his first and the overall ninth restaurant in Chicago, Illinois, and gave birth to McDonald’s Corporation. In 1958, the restaurant chain sold its 100 millionth hamburger. In 1960, Kroc renamed his company as “McDonald’s Corporation”. In 1961, Kroc convinced the McDonald brothers to sell the business rights to him in the company. Thus he purchased the brothers’ equity for a sum of $2.7million and led to its worldwide expansion. As McDonald’s expands successfully into many international markets, the company became a symbol of globalization and the spread of the American way of life. Its prominence also made it a frequent subject of public debates about obesity, corporate ethics and consumer responsibility. Task 1 1. What is the passage mainly about? A. Secrets of McDonald’s success. B. Brief history of McDonald’s C. Changing of McDonald’s
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