A．The benefits of nuclear weapons．
B．The environmental pollution caused by nuclear-powered stations．
C．The disadvantages of used fuel．
D．The advantages of nuclear-powered stations．

A．The United Nations Atomic Energy Authority．
B．The United Kingdom Atomic Energy Organization．
C．The United States Atomic Energy Authority．
D．The United Kingdom Atomic Energy Authority．

A．The nuclear stations are safer than the coal-fired stations．
B．The cost of building the nuclear stations is more than that of the coal-fired stations．
C．The cheaper running of the nuclear stations Can offset its great construction．
D．The nuclear staffons are much cleaner than the conventional ones．