|
The first metal used by man was |
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|||
|
(a) |
gold |
(b) |
silver |
|
|
(c) |
copper |
(d) |
iron |
|
|
The first metal used by man was |
|
|||
|
(a) |
gold |
(b) |
silver |
|
|
(c) |
copper |
(d) |
iron |
|