Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct tvord for each of the blanks.
If you are an environmentalist, plastic is a word you tend to say with a sneer or a snarl. It has become a symbol of our wasteful, throwaway society. But there seems little doubt it is here to stay, and the truth is, of course, that plastics have brought enormous (41) ________ , even environmental ones. It’s not really the plastics themselves that are the environmental evil - it’s the way society chooses to use and (42)________ them.
Almost all the 50 or so different kinds of modem plastic are made from oil, gas or coal - nonrenewable natural (43) ________ . We import well over three million tons of the stuff in Britain each year and, sooner or later, most of it is thrown away. A high (44) ________ of our annual consumption is in the (45) ________ of packing, and this (46) ________ about seven per cent by weight, of our domestic refuse. Almost all of it could be recycled. but very little of it is, though the plastic recycling (47) ________ is growing fast.
The plastics themselves are extremely energy-rich - they have a higher calorific (48) ________ than coal and one method of “recovery” strongly (49) ________ by the plastic manufacturers is the (50) ________ of waste plastic into fuel.
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