What are people wearing in the 21 st century? Scientists believe that in the near future, high—tech（高科技）clothing will make our lives more interesting. Take a look here and see some great inventions.

    Some say Speedo swimsuits helped world champion Michael Phelps move faster in water   1.  This gives clothes many new functions（功能）.

    Now many clothes makers begin to use new fabrics（纺织品）like nanofiber（纳米纤维）. The clothes made from these fabrics can keep away stains（污渍）and creases（皱褶）  2. 

    Clothes makers also use eco—friendly materials in clothing. Most of them come from old clothes. newspapers or even plastic bottles.   3.   Many clothes makers like Li-Ning make clothes from this low-carbon material.

    As the Internet has become part of our life, everyday objects are becoming part of a network.

Clothing is, too. For example, a US company has developed a pair of pants.  4.

    Scientists put sensors（传感器）inside the pants and then connect them to a computer. When people put the pants on, the sensors collect information about the body and send it to the computer.  5.  .

A. People don't have to wash them or iron them frequently.

B. Reusing materials will help us to cut down on carbon emissions（碳排放）.

C. High-tech clothing is made from old clothes, newspapers or even plastic bottles.

D. It can see your movement and “let a computer know your every move”.

E. Today there's more and more technology in clothing.

F. Scientists believer this technology will help us learn more about our bodies.

G. Clothes makers can make more and more money in the future.

阅读下面的背景材料，并回答问题。

　　Ann likes fish and chips. What is your favourite meal at home? Have you eaten from another country? Here is some information about some kinds of foods you might eat.

　　Dumplings are eaten in different ways around the world. Chinese jaozi, Italian ravioli(菜卷) Jewish kreplach (犹太人的方形肉包) and Polish pierogi(馅饼) are kinds of dumplings filled with meat, cheese or vegetables.

　　Pizza, an international favourite came from the city of Naples, Italy about 700 years ago. Pizza is the Italian word for pie, so you don't need to say pizza pie.

　　Hamburger was first called Hamburg steak. Later, people just called them hamburgers. The hamburger was named after the city of Hamburg, Germany.

　　Frankfurters were named after the city of Frankfurt, Germany. About 1900, an American selling cooked frankfurters called them hot dogs because they looked like a kind of small dog.

　　Ice-cream cones were first sold at the World's Fair (博览会) in St. Louis Missouri, in the USA, in 1904. A scoop (圆勺) of ice cream was put into a cone(圆锥形之物). You eat the ice cream, then you eat the cone-nothing left to throw away.

　　Sandwiches were named after the Earl of Sandwich, a rich man in England in the 1705. While he was playing cards, he asked a servant(佣人) to bring him two piece of bread with a piece of meat between them. This was the first sandwich.

(1)What are often filled with in Dumplings?

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(2)When and where did pizza come from?

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(3)Why did people call Hamburg steak Hamberger?

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(4)Why did the American call Frankfurters hot dogs?

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(5)When and where were Ice-cream cones first sold? Is it right for you to eat the ice cream only and throw away the cone?

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(6)How were Sandwiches named?

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