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Timeline
Things that are gifted by nature are called natural things.
Things made by human are called human-made things.
Machines help us do our work easily and quickly.
Computer is a smart machine used to do many tasks.
A. Choose the correct option.
1. Which of these is a human-made thing?
a. b.
c. d.
2. Which of these is a natural thing?
a. b.
c. d.
3. Which of these is a smart machine?
a. b.
c. d.
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