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    2010 S1

    2010 S1

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    Speed as well as accuracy is important in this section. Work quickly, or you might not finish the paper. There are no penalties for incorrect responses, only marks for correct answers, so you should attempt all 50 questions. Each question is worth one mark.

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    In the case of plastic drink bottles, recycling is not the best answer to the problem of garbage disposal. Ninety five per cent of soft-drink bottles sold in the United States are made of a compound of polyethylene (PET) which poses recycling problems. They are potentially carcinogenic if recycled into new food or drink containers. Recycled PET tends to absorb other chemicals before re-melting and these chemicals could leach into food or drink that is stored in a recycled container. However, if disposed of in landfill sites, plastic is not harmful to the environment. It can be squashed flat, so that it occupies little space and it is inert. Unlike other waste, it does not leach into soil or water, nor does it produce a dangerous build-up of methane.

    1. Which one of the following best expresses the main conclusion of the argument above?
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    Explanation

    The correct answer is E.

    The text speaks about the recycling risks of plastic drinking bottles as they are mostly made of PET, in the US. The passage goes on to talk about how if added to landfill sites there is little to the environment. It is important to note that it is not claimed in the arguement that PET could not be recycled safely, rather that it is potentially dangerous. Looking at the answer options now we can say that answer option A and B are not plausible answers. C is also incorrect, as the carcinogenic claims are only about the recycling process, not about general use of the plastic. Option D is not explored at all in the text, therefore meaning the only possible answer option is E.

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