《China is the third nation that sent a person into space》SectionC PPT
第一部分内容：Tick the fields we use the computer in.
education business
industry communication
daily life medical care
entertainment sports
Can you give an example of the use of the computer in one of the fields above?
Doctors can find diseases easily with the help of computers.
In space, computers have been used to control the speed and direction of a spaceship.
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《China is the third nation that sent a person into space》PPT，第二部分内容：Paragraph 1
1.There is no doubt that computers are very useful in
technology and business.毫无疑问电脑在技术和贸易业都非常有用。
(1)doubt (n.)
Doubt is the key to knowledge.
There is no doubt that we will be successful.
(2)doubt (vt.)+ 从句
I doubt whether/if he'll change his mind.
I don't doubt that they will be able to solve the problems.
(3)doubt (vi.)+ about / of
There is no reason to doubt of his honesty.
2.For example , tiny computers which are inside patients’bodies can keep their hearts beating normally.
例如，病人体内植入微电脑能帮助病人的心脏正常搏动。
tiny very small in size adj. 极小的，微小的
64英寸 超大型（Huge）
32英寸 大型（Large）
16英寸 中型（Medium）
8英寸 小型（Small）
4英寸 超小型（Tiny）
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《China is the third nation that sent a person into space》PPT，第三部分内容：Exercise
properly, besides, brought, get, enough
Computers have improved our lives, but they have _______problems, too. For instance, if we work on computers too long, we may _____ headaches or sore eyes. If we play computer games too much, we won’t have ______ time to study or exercise. ______ , not everything we read on the Internet is true or good for us. Computers help us at work and at home, but they must be used _______.
Write a short passage with the title with One Day Without Computers. The following information may help you.
Suppose you were on a special day in 2030. During the day, there were no computers in the world. What trouble would you have? You may begin like this:
One Day Without Computers
Today, when I got up, I just turned on the computer as usual, but it didn’t work. Then I tried my brother’s PC, my parents’, even my dog’s, but none of them worked. Later, it was reported on TV that all of the computers in the world broke down today…
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《China is the third nation that sent a person into space》PPT，第四部分内容：Summary
We learn:
1. Some words: doubt, tiny, inside, brain,cancel, connect
2. Some phrases: no doubt, for instance
3. Some sentences:
(1) There is no doubt that computers are very useful in technology and business.
(2) Computers help us at work and at home, but they must be used properly.
We can:
1. Talk about the importance of computers.
2. Write a composition by using our imagination.
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《China is the third nation that sent a person into space》PPT，第五部分内容：Assignment
Read 1a.
Memorize the useful expressions and key sentences which we learned today.
Finish Section C in your workbook.
Review Sections A-C.
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