单项选择题：消毒效果与消毒剂的投加浓度和接触时间（）。 A.成正比 B.成反比 C.不确定 D.

题型：单项选择题

阅读理解。

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 fist 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 fist

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 with that?" Why don't you think about the history of French fries a little while,

and say "Yes, please. Thank you."

1. What are French fries made of?

______________________________

2. Where do French fries originally come from?

______________________________

3. Why are the fried potatoes called French fries?

______________________________

4. Who first introduced French fries to America?

______________________________

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

______________________________

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消毒效果与消毒剂的投加浓度和接触时间（）。 A.成正比 B.成反比 C.不确定 D.