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1、 Unit 3 Inventors and inventions 课时作业 五 Warming Up Reading 单词拼写 1 You should not brake the car 猛然 on an icy road 2 Noodles are 方便的 to make in the morning for breakfast 3 He has little 希望 of winning a prize 4 He told us to deal with the dangerous work with 谨慎 5 What 标准 are used for assessing a studen
2、t s ability 6 It was hard to 辨别 one twin from the other 来源 21cnj y co m 7 Petrol is the most important 产品 of many Middle East countries 8 The police 抓住 an escaping convict 9 Please 归档 these letters under Smith 10 The 仁慈的 king saved the young officers from death 完形填空 2013 深圳高二调研 There have been many
3、great inventions which have changed the way we live The first great invention was one that is still very important today the wheel This made it easier to 1 heavy things and to travel long distances www 21 cn For hundreds of years after that there were few inventions that have as much 2 as the wheel
4、Then in the early 1800 s the world started to 3 There was little unknown land in the world People did not 4 to explore any more They began to work so as to 5 life better 出处 21 教育名师 In the second half of the 19th century many great inventions were made Among them were the camera the electric light an
5、d the radio These all became a big 6 of our life today 版权所有 21 教育 The first part of the 20th century saw more great 7 the helicopter in 1909 movies with sound in 1926 the computer in 1928 and jet planes in 1930 This was also a time when a new material was first made Nylon came 8 in 1935 It changed t
6、he 9 of clothes people had been wearing 21 教育名师原创作品 The middle part of the 20th century brought new ways to help people get over 10 They worked very well They made people healthier and let them live longer lives By the 1960 s most people could 11 to live at least 60 21 cnjy com By this time most peo
7、ple had a very good life Of course new inventions continue to be made But man now had a desire to explore again The world was 12 to man but the stars were not Man began to look for ways to go into 13 Russia made the first step Then the United States took a step Since then other countries 14 China an
8、d Japan have made their steps into space In 1969 man took his biggest step away from the earth Americans first walked on the moon This is certainly just a 15 though New inventions will someday allow us to do things we have never dreamed of 1 A carry B bring C find D put 2 A time B knowledge C situat
9、ion D effect 3 A appear B mind C change D rise 4 A have B want C decide D like 5 A work B turn C make D think 6 A sort B part C step D use 7 A results B jobs C things D inventions 8 A out B in C away D about 9 A rest B course C kind D pattern 10 A rules B diseases C difficulties D problems 11 A hope
10、 B expect C start D ask 12 A useful B popular C common D known 13 A space B sky C air D room 14 A including B except C but D included 15 A movement B interest C beginning D surprise 阅读理解 Today I ll be talking about the invention of the camera and photography The camera is often thought to be a moder
11、n invention but as early as 1727 a German physicist discovered that light darkens silver salt Used as a camera a big box was set up and a small hole was cut in one side to let the light in he made temporary pictures on the salt Silver salt is still the base of the photographic film today Then a Fren
12、ch scientist made the first permanent picture by using a special piece of metal which was covered with silver salt A photograph he made in 1862 still exists The painter De Gear improved the process by covering the metal also with placing the common salt which we can eat That was in 1839 the official
13、 date of beginning of photographs But the problem was the printing of the photographs And it wasn t until other scientists developed the kind of photographic paper we now use that good prints were possible and photography became truly modern In the 1870 s Matthew Bradey was able to take his famous p
14、ictures in American Civil War In the 20 s of this century Georges Mann of the United States simplified film developing and Dr Edward Lane invented the so called Instant Camera which uses self developing film If we say photography came into existence in 1839 it follows that it took more than 100 year
15、s for the camera to reach its present condition of technical refinement 密度 21 世纪教育网版权所有 1 What discovery was the basis of photography A Light darkens silver salt B Light darkens natural salt C Light darkens silver D Light darkens self developing film 2 How was the first permanent picture made A By m
16、aking use of special paper B By adding common salt to silver salt C By giving a slight colour to the silver salt D By using a special piece of metal 3 Which does the author regard as the official date of the beginning of photography 21 教育网 A 1727 B 1826 C 1839 D 1870 4 According to the author why is Matthew Bradey remembered today A He was a soldier B He took war photographs C He painted portraits D He designed a portable camera 5 What did Doctor Edward Lane invent A A cheap process of developin
