|
Pregunta
|
Respuesta correcta
|
what is UHMW :
|
a plastic |
What is plastic generally made of? :
|
synthetic food |
|
Pregunta
|
Respuesta correcta
|
What is cement generally made of? :
|
cement |
What is glass generally made of? :
|
silica sand |
what a large bridge is usually made of :
|
metals |
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