单项选择题

A．worthy
B．worth
C．worthless
D．worthwhile
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单项选择题
Why is Nancy reluctant to speak to the neighbors about the problem
A．She doesn’t want to make a bad first impression.
B．She is afraid of getting off the subject.
C．She is afraid they won’t listen.
D．She knows that they can’t do anything about it.
单项选择题
How were whales helpful to the Vikings
A．Their feeding ground could be used by the Vikings as a landmark.
B．They were a good source of food for the Vikings.
C．The Vikings could follow their migratory route to find the landmark.
D．They helped the Vikings find routes through the ice.
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