13
iron for centuries before they learnt the structure of the metal. But some
modern technologies, such as nuclear power production and space travel,
(8)
… … … … … .
Nowadays, when people speak of technology, they generally mean
(9)
… … … … … . Industrial technology began about 200 years ago with
the development of the steam engine, the growth of factories, and the mass
production of goods. It
(10)
… … … … … of people’s lives. The develop-
ment of the car influenced where people lived and worked. Radio and tele-
vision changed their leisure time. The telephone revolutionized communica-
tion…
2. Fill in the gaps with the missing words in the following sentences
–
the
first letter of each word has been given to help you.
1. Science
d
… … … … … with a variety of subjects.
2. Scientists
s
… … … … … for the answers to the different questions.
3. The structure of the cells is
e
… … … … … by the scientists.
4. Different theories
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