单项选择题

A．inflection
B．infection
C．affection
D．reflection
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单项选择题
A．mortalsB．moralsC．immortalsD．mortal
A．mortals
B．morals
C．immortals
D．mortal
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
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