单项选择题

Even the peaceful use of nuclear power is potentially dangerous because of ______.

A．long-term deadly pollution
B．losing its justification
C．an imbalance of benefits
D．a change of morals
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单项选择题
The author says the risks of using nuclear power are ______.
A．greater than ever
B．balanced by the benefits
C．small and remote
D．practical problems
单项选择题
A lot of a lawyer's time is spent ______ investigations.
A．conducted
B．conduct
C．to conduct
D．conducting
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