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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.






                     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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