题型:任务型阅读 题类:常考题 难易度:普通
湖南省岳阳市第一中学2017-2018学年高二下学期英语期末考试试卷
Steel is a hard metal that people use to make many different products. Car bodies, bridges, building frames, and containers are just a few of the things made from steel. But steel is better than iron in many ways. Steel is stronger but lighter than iron. Steel also lasts longer than iron.
Then they add carbon to the liquid iron. They may also add other materials to make different types of steel. For example, steel with added chromium(铬)is called stainless steel. It will not rust(生锈)or stain. Finally, workers use machines to cool the liquid steel into bars or long sheets.
People made the first steel as early as 1400 BC. Ancient people heated iron inside a pile of burning charcoal(木炭). . The result was not the same as modern steel, but it was stronger than regular iron.
In the 1800s people began to use huge ovens to make large amounts of steel. In the late 1800s builders used steel to make some of the first skyscrapers. . In the 1900s new processes made steel-making easier. Today steel remains one of the most popular building materials in the world.
A. This added carbon to the iron.
B. Steel is quite different from iron.
C. The hardened steel may then be made into products.
D. Steel is basically iron mixed with a little carbon.
E. Then they will be cooled and put on the market.
F. To make steel, workers hear iron until it melts.
G. They also used steel to make large, modern bridges.
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