My name is Lily. My father is a teacher. His students love him a lot because he is funny. I love him, too, but I think he can be “foolish”  41 .
Once we moved into a new house and had to go shopping to buy new chairs and lights. In the supermarket, I’m interested   42  some of the beautiful lights with good qualities and made my father buy them.
When we got home, my father began to work out how much money we had   43  that day. Suddenly, he stopped. “Something’s wrong.” he said. “I’ve got 30 yuan   44  than I should!”“That’s great,” I said. “You can buy me that   45  book I want.”
Father said nothing. Instead, he counted（数） how much money he had again and again.
“The salesgirl must have made a mistake. We   46  go back to the shop,” he said.
“Do you have to go back?” I asked. “Nobody will know we   47  too much change(找零). It would be foolish to go back.”
“It wouldn’t be ‘foolish’.” my father said angrily. “It’s called being   48  .” At that moment, I looked into his eyes and knew he was right.
The salesgirl was surprised to see us in the shop again. But   49  we gave her the money, she thanked us a lot.
On my way home, my father stopped me   50  smiled. “Do you still want that cartoon book?” he asked. I looked at my “foolish” father and answered loudly, “Father, you are the greatest!”

　　Why was his big idea so successful? Maybe the most important reason was that his timing was right. In the 1950s, most married women stayed home to keep house and take care of their children. In the 1960s, many women returned to the workplace. This meant that they had less time and energy to do housework and preparation for meals so they relied more on “TV dinners” and fast-food restaurants. Single parents also have little time to spend in the kitchen. People living alone also depended on this kind of food, since cooking for one causes often more trouble than it is worth.

　　Fast food is not part of the diet of all Americans. Another trend of the 1960s, sometimes called the back-to-nature movement influenced many people to avoid food that was packaged or processed. This preference for nature food continues to this day.

　　From the success of Raymond Kroc's fast-food business, we can say the social economic trends influence where and what we eat.

（　）1. “Cooking for one causes more trouble than it is worth” means ________.

A. cooking for several people is worth more money

B. It is not necessary to take too much time to cook for one person

C. there are more problems when one person cooks

D. there are a lot of housework and preparations to do when one person cooks

（　）2. An idea implied in the passage is that ________.

A. many married women began to work in the 1960s

B. natural food is popular today

C. fast food is not part of the diet of all Americans

D. divorce （离婚） causes people to change their eating habits

（　）3. Americans had the back-to-nature movements ________.

A. in 1955　　  B. in 1950　　   C. in 1960s　　 D. both in 1950s and 1960s

（　）4. Why was McDonald's idea so successful? It was mainly because ________.

A. people living alone depend on fast-food

B. single parents have little time to spent in the kitchen

C. many women returned to the workplace in 1960s

D. Kroc's timing was right

（　）5. The main idea of the passage is that ________.

A. Raymond Kroc is the most successful fast-food business owner in the world

B. social and economic changes affect eating habits

C. fast-food is easy to prepare and serve quickly

D. Americans eat either fast food or natural food