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优化指导13-14学年高一英语课件（人教版，必修2）unit3Computers-section1WarmingUpReadingPreshyreading.ppt
;1．Which is the earliest computer？Who invented it?
答案：C；Charles Babbage查理斯·巴贝奇;2．Can you say something about the following pictures?
答案：略;
3．How have computers changed our lives?
答案：We use the computer of Internet to：type our homework；draw pictures；play games；communicate with friends；gather related information for lessons；buy the things we like；listen to music；watch movies.;Scan the text and then choose the best answer according to the text.
1．In 1936，Alan Turing wrote a book about________.
A．how to simplify difficult sums
B．how the computer could be made to work as a “uni-versal machine”
C．how to build an analytical machine
D．how to change the computer’s shape;2．Why did I totally change my shape?
A．Because I could do many things.
B．Because I could simplify sums.
C．Because my memory improved.
D．Because I never forgot anything.
3．How long did it take before the computer was built as an analytical machine?
A．500 years. B．300 years.
C．100 years. D．200 years.;
4．According to the last paragraph，which was not mentioned in the use of the computer?
A．Mobile phones. B．Rockets.
C．Bikes. D．Robots.;
5．How can you understand the underlined word?
Since the 1970s many new applications have been found for me.
A．a formal request for sth.
B．the practical use of sth.
C．an act of spreading sth.
D．an act of making a rule
答案：1.B 2.C 3.D 4.C 5.B;1．Read the text and then do the following exercises.
(1)The main idea of the text.
This is a short________ of the________ of computers.;(2)Find out the topic sentence of each paragraph.
Paragraph 1：_____________________________________
Paragraph 2：______________________________________
Paragraph 3：___________________________________
答案：(1)history；development (2)Paragraph 1：Over time I have been changed quite a lot. Paragraph 2：These changes only became possible as my memory improved. Paragraph 3：Since the 1970s many new applications have been found for me.;2．Read the text and then answer the following questions.
(1)Look through
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