单项选择题

A．mortals
B．morals
C．immortals
D．mortal
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单项选择题
It' s implied that ______.
A．nuclear power stations may become the targets of terrorist attack
B．the Bush administration doesn't give due weight to environment protection
C．carbon dioxide is the principal source of greenhouse gas
D．nuclear waste will turn to be an environmental threat in the long - run term
单项选择题
According to the passage, which of the following measures is the least helpful in protecting the environment
A．Encouraging the use of clean energy sources.
B．Cutting off subsidies on all fossil fuels.
C．Adopting price reform to reduce emission.
D．Promoting the resurgence of nuclear power.
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