9Achapter2英语课件

1、9 A chapter 2,Computers 辽中县冷子堡九年一贯制学校 孙敏,Hidden helpers,Not so many years ago, you _ _ saw computers. Now they are _(here and there). There may also be _ (very small), hidden computers in your home that you _ _ _(dont realize). There may be one inside your TV set, telephone or washing machine. So _(

2、perhaps) you _ _ (need) computers more than you realize.,hardly,ever,everywhere,tiny,are,unaware,of,maybe,depend,on,What kind of jobs can a computer do?,It is common _(know) that computers are super _(calculate). They can calculate very fast and _(rare) give wrong answers. They can also type, print

3、and draw things like diagrams and graphs. They can teach you and play games with you. More _(important), they can _(operation) railways (like the underground) and fly aeroplanes and spaceships. For these reasons, we often call them _(electricity) brains.,knowledge,calculator,rarely,importantly,opera

4、te,electronic,Is a computer cleverer than I am?,The answer to this question is, for the time being, “No”. Your brain can understand the meaning of things better and create new ideas. However, one day computers may be able to do most things that a human being can do and do them better. They may be be

5、tter than doctors, judges and teachers at doing their jobs.,Is a computer cleverer than I am?,1Is a computer cleverer than I am? 2Who does “I” refer to? 3Whose jobs do computers do better than us?,Is a computer cleverer than I am?,If this is true, it raises interesting questions. What will happen to

6、 us if computers can do our jobs? How will we spend our lives? Will we have nothing to do? Computers may change our lives. But will they make them better?,Is a computer cleverer than I am?,5What will happen to us if computers can do our jobs? 6How will we spend our lives? 7Will they make our lives b

7、etter?,How do we give me a computer instructions?,We give a computer instructions by _(put) a program into it. The program is _(write) by a human being, and it is _(必要的) that the human does not _ _ _(犯错误). If we want a computer to do different jobs, we have to give it different _(程序).,putting,writte

8、n,essential,make,a,mistake,programs,CD-ROMs,Many of todays computers have CD-ROM drives. A CD-ROM can hold over 300,000 pages of writing, and can also contain pictures and sound. Thus, for example, you can use your computer to read about a famous person in history such as John F Kennedy, and you can

9、 see a photograph or video of him, and even listen to him speaking. Some people think that CD-ROMs will soon be more popular than books.,CD-ROMs,Many of 1 computers have CD-ROM drives. A CD-ROM can 2over 300,000 pages of 3, and can also contain pictures and sound. 4, for example, you can use your co

10、mputer to read about a famous person 5history such as John F Kennedy, and you can see a photograph or video of6, and even listen to him 7. Some people think that CD-ROMs will soon be 8 than books.,( ) 1Atoday B todays ( ) 2Ahold B take ( ) 3Awrite B writing ( ) 4A So B Thus ( ) 5Ain B on ( ) 6A him B his ( ) 7A speaking B speak ( ) 8A popular B more popular,B,A,B,B,A,A,A,B,f,c,g,a,d,b,e,Operating,railways,Inside,your,TV,set,Creating,new,ideas,doctors,not