fore suppression of symptoms can prolong the illness that causes them.
7 Editorial: Critics of nuclear power complain about the allegedly serious harm that might result from continued operation of existing nuclear power plants. But such concerns do not justify closing these plants;after all, their operation has caused no more harm than that caused by pollution generated by coal-and oil-burning power plants, the most important other sources of energy. Which of the following is an assumption on which the argument depends?
Existing nuclear power plants should be closed only if it can be conclusively demonstrated that their continued operation is likely to cause harm more serious than the harm their operation has already caused.
Closing existing nuclear power plants would require greatly increased reliance on coal-and oil-burning power plants.
The harm that has resulted from operation of existing coal-and oil-burning power plants has been significant.
The harm that a nuclear power plant is likely to cause as it continues to operate can be reliably predicted from the past history of nuclear power plants.
The only harm that has resulted from operation of existing coal-and oil-burning power plants has resulted from the pollution generated by these plants.
8 Drug manufacturer: Although our company requires that patients who use our new drug also pur- chase from us nonreusable kits for weekly blood testing, the expense of those kits is an entirely necessary one: weekly blood testing must be done to monitor the drugs potential side effects, which can be very dangerous. Which of the following, if true, most seriously weak- ens the manufacturers argument?
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