9999105×25.

题型:解答题

问题:

99
99
105
×25
考点:分数的四则混合运算及应用
题型:解答题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中多余选项。

     For over one hundred and fifty years, Americans of all social classes have worn blue jeans. 1_____

Whether they are worn for work or for fashion today. Strauss' invention continues to be popular not only

among Americans but also among people around the world.

     Levi Strauss was born in Germany in 1829. 2_____ He grew up in Kentucky before moving to New

York in 1847. Before becoming an American citizen and moving to the West in 1853, Strauss worked in his

brother's dry goods business. This gave him a chance to produce his famous invention. After the gold rush

of 1949, Strauss decided to move to the West to seek his fortunes.

     Strauss did not want to be a person who searched an area for minerals. Instead, he knew he could make

a good living by selling supplies to the miners. At first, he planned to sell sewing supplies and cloth. 3_____

When he heard miners complaining that their clothes were easily broken or they usually tore their pockets

during mining, he decided to use a special fabric to make pants for the miners. These pants proved so popular

that he quickly ran out of materials to make more.

     In 1873, Strauss received a letter from a Jewish tailor named Jacob Davis who had invented a process of

connecting pockets with copper rivets (铆钉). This made the pants last a long time. Because Davis did not have

the money to patent his idea, he offered to share it with Strauss if Strauss would agree to pay for the patent.

4_____.

     By the time Strauss died in 1902, he had made a great contribution to American fashion. 

     5_____ The business has been growing ever since and Levi Strauss' company is now one of the largest

clothing companies in the world.

A. As a young boy, he moved with his family to the United States.

B. Nobody knew what kind of material was suitable.

C. He did and Levi jeans have been made with metal rivets ever since.

D. However, he did not get much business for those products.

E. He also made a great contribution to America's clothing industry.

F. Since they were invented by Levi Strauss, they have become a symbol of American consumer culture.

G. As the business grew, Strauss got much money from it.

题型:解答题

Blipmode用于控制()。

题型:解答题

前卫的职责是控制中场、组织进攻,不用参与防守。

题型:解答题

石蜡热效应应属于()

A.红外热

B.放射热

C.内热源性热

D.辐射热

E.外生热

题型:解答题

何时出口标志(EXITsigns)点亮?()

A.座舱高度过高

B.禁止吸烟标志点亮时

C.应急灯点亮时

D.以上都对

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