Do you think that French fries are really French？French fries are called"pommes frites"in France and they are not from France．French fries come from Belgium （比利时） originally．French fries are made of potatoes，and they are cut and fried．The fried potatoes are called French fries because they were first seen by Americans in Belgium，but they were fried in the French way．The French way is to fry potatoes twice with a small pause in the middle．

During World War I，there were a lot of hungry American soldiers in Northern France and Belgium．They ate French fries in Belgium．After the war was over，the soldiers went back home to America．However，they missed French fries so much that they made French fries at home．That's how French fries were first introduced to America．

French fries were called Belgian fries once，but the name was finally changed to French fries．Sometimes French fries are just called fries．

French fries are one of the most popular potato foods in America．American fast food restaurants such as McDonald's and Burger King have French fries on their menus．French fries are freshly fried，and usually served with hamburgers．

If you visit any fast food restaurant in America and order a hamburger，you will probably hear"You want fries withthat？"Why don't you think about the history of French fries a little while，and say"Yes，please．Thank you．"

51．What are French fries made of？

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52．Where do French fries originally come from？

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53．Why are the fried potatoes called French fries？

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54．Who first introduced French fries to America？

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55．What does the underlined"that"in the last paragraph refer to？

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