单项选择题

What I have learned from this professor is of ______ value to my subsequent research.

A. indigestible
B. intolerable
C. incomprehensible
D. inestimable
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单项选择题
Jane is so tied up with her business that taking time off is ______ out of the question.
A. virtually
B. esthetically
C. ethically
D. morally
单项选择题
The government has to consider whether the destruction of one human life can be ______ by the hopes of saving others.
A. notified
B. specified
C. justified
D. magnified
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