Plastic is the panacea of the ages. Nearly every man-made object (1) (2) of, or at least (3) its very structure, to this wonder compound. Rain slickers, computer terminals, automobile engine parts, coffee cups (and the sugar stirrers too), breast implants, toy soldiers--they are all made up of plastic, or one of its many (4) . Since the (5) of civilization, humankind has been experimenting (6) a multifunctional material--one that had to be equally strong and lightweight--to carry, contain and protect valuables. (7) it could carry, contain and protect humans too, even Better. Generations of tinkerers and scientists set off (8) the challenge, striking gold some 170 years ago. By mixing natural rubber with sulphur they created the world’s most utilized material ever. In developing a (9) , malleable and durable substance, the most important inventions of the industrial age were to follow shortly thereafter. The aut
A. enlightened
B. corrected
C. progressed
D. improved
Plastic is the panacea of the ages. Nearly every man-made object (1) (2) of, or at least (3) its very structure, to this wonder compound. Rain slickers, computer terminals, automobile engine parts, coffee cups (and the sugar stirrers too), breast implants, toy soldiers--they are all made up of plastic, or one of its many (4) . Since the (5) of civilization, humankind has been experimenting (6) a multifunctional material--one that had to be equally strong and lightweight--to carry, contain and protect valuables. (7) it could carry, contain and protect humans too, even Better. Generations of tinkerers and scientists set off (8) the challenge, striking gold some 170 years ago. By mixing natural rubber with sulphur they created the world’s most utilized material ever. In developing a (9) , malleable and durable substance, the most important inventions of the industrial age were to follow shortly thereafter. The au
A. consists
B. comprises
C. constitutes
D. composes
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