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In space, computers have been used to control the speed and direction of a spaceship.
What is the passage about ?
The Importance of Computers
Underline the topic sentence of each paragraph.
1. Since computers were invented in the USA in the 1950s, they have become very important in many areas of work and leisure.
2. Since the Internet came into being, people’s lives at home have been changed, too.
3. Computers have improved our lives, but they have brought problems, too.
Place
The usage of computers
In space
In hospitals
In factories
In business
control the speed and direction
find diseases easily and solve other problems
do dangerous work
used to place and cancel orders
There is no doubt that we will be successful.
I don't doubt that they will be able to solve the problems.
doubt n. & v. 怀疑，疑惑
(2)doubt (vt.)+ 从句
(3)doubt (vi.)+ about / of
Doubt is the key to knowledge.
There is no reason to doubt of his honesty.
I doubt whether/if he'll change his mind.
(1)doubt (n.)
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。
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。
64英寸 超大型（Huge）