单项选择题

Scientists have warned that penguins in the Antarctic could be very________to changes in climate and could be threatened by any long-term temperature shifts.

A．superstitious
B．acceptable
C．suspicious
D．susceptible
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单项选择题
Since settling in Scotland I ________ golf as a hobby.
A．have taken up
B．took up
C．have taken in
D．took in
单项选择题
Never________the power of your actions. With one small gesture you can change a person’s life.
A．underestimate
B．overvalue
C．misuse
D．dismiss
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