Although prohibitively expensive at first, some libraries now own three-dimensional printers, industrial robots which can produce a huge variety of objects.
Choose 1 answer:
Choose 1 answer:
(Choice A) NO CHANGE
A
NO CHANGE
(Choice B) three-dimensional printers, industrial robots which can produce a huge variety of objects, are now available at some libraries.
B
three-dimensional printers, industrial robots which can produce a huge variety of objects, are now available at some libraries.
(Choice C) three-dimensional printers are now available at some libraries, industrial robots which can produce a huge variety of objects.
C
three-dimensional printers are now available at some libraries, industrial robots which can produce a huge variety of objects.
(Choice D) some libraries, industrial robots which can produce a huge variety of objects, now own three-dimensional printers.
D
some libraries, industrial robots which can produce a huge variety of objects, now own three-dimensional printers.