While it is true that nuclear reactors do not produce visible smoke, it is certainly not 【25】______ that they do not pollute. And the pollution they produce is much more insidious precisely because it is 【26】______ .
【27】______ inconvenient it may be for governments to publish all the facts, they have no moral excuse for not doing so, 【28】______ they think they are acting in our best interest. At least some of the facts are known, even though they are not widely reported.
Nuclear reactors produce radioactive water and gases in vast 【29】______ . What 【30】______ all this waste？ It is 【31】______ concrete tanks and stored on tank farms. It is 【32】______ in disused salt mines. It is run into fractured rock. It is buried. It is 【33】______ about in special trains. But even when dumped, it has to be kept 【34】______ by sprinklers to stop it from boiling. And the contents of the tanks are, of course, extremely corrosive. The efforts of a fracture in the tank or a failure of the cooling system would be 【35】______ .
While every effort is made to 【36】______ that radioactive wastes do not escape into the sea or 【37】______ supplies of drinking water, such a leakage would be too horrible 【38】______ contemplate. But even then, governments would, presumably continue to belittle the hazards.
It seems that 【39】______ governments can get away with not telling the truth, they will continue to keep silent. Nevertheless the people 【40】______ to know the full facts. Do you know what happens to the radioactive waste in your country？ No？ Well—find out!
【21】

A. for
B. with
C. to
D. instead of