2017届高考英语（重庆专用）二轮精练：必修5 unit1 Great scientists单元测试_高考复习指南

2017届高考英语（重庆专用）二轮精练：必修5 unit1 Great scientists单元测试

　　38．Which of the following can be the main contribution of

　　“. com”？

　　A．It gave birth to the Internet.

　　B．It combined politics，entertainment and space science.

　　C．It made the Internet accessible to ordinary people.

　　D．It helped produce more domain addresses.

　　答案　C　[细节理解题。根据第四段最后一句，可知．com帮助创立了一个新的工业，用以往不可能实现的方式连接了全世界的人，故选C。本题难度适中。]

　　39．We can infer that before 1985，getting on line was________.

　　A．impossible

　　B．complex

　　C．expensive

　　D．popular

　　答案　B　[细节理解题。根据第三段内容，.com废除了需要使用复杂的“地图”可知在1985年．com诞生之前上网很复杂，故选B。本题较难。]

　　Albert Einstein(1879—1955)was one of the greatest and most original scientific thinkers of all time.

　　Born of Jewish parents in Germany，he completed his education in Switzerland and got his Ph.D at the University of Zurich.He went to live in the United States in 1933 because of the rise of Nazism(纳粹)in Germany and Hitler's persecution(迫害)of the Jews.

　　In 1905，while still at Zurich，he published his Special Theory of Relativity，which was based on things everyone may have noticed.If two trains are standing alongside each other and one train starts to move，a person sitting in the train may wonder whether his own train is moving or the other is moving，and before he finds out what is happening，he can see that one train is moving relatively to the other.From this and also from other more complicated facts，Einstein came to the conclusion that all motion is relative and that there are really no such things as absolute(绝对)motion.Some of the other conclusions he drew are that nothing can go faster than light，and that if something such as a ruler was moving faster and faster it would seem to get shorter and shorter as its speed was near the speed of light.By 1915，Einstein had made known his General Theory of Relativity.He also improved on Newton's theory of gravity.Most of his theories have been tested and found to be true though some may sound strange.For his important work he was awarded the 1921 Nobel Prize for Physics.