单项选择题

The polar explores took every precaution to ______ the dangers of their trip.

A．optimize
B．standardize
C．energize
D．minimize
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单项选择题
Hot air accompanied by high relative humidity feels warmer than ______.
A．is it actually
B．it actually is
C．actually it is.
D．is actually it
单项选择题
Jean worked just so much ______.
A．like what she was told to
B．as she was told to
C．as to what she tried to do
D．like she was told to
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