题目内容

We had better move forward, for it will not do us any good to ________the past.

A. shrug off
B. dwell on
C. live on
D. single out

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They took emergency steps to protect themselves from the _______disease.

A. conveyed
B. dreaded
C. dispersed
D. exploded

The spending cuts made it possible to fill the posts left _______by retired teachers.

A. depressed
B. jealous
C. vacant
D. dissatisfied

Can you list a few problems likely to ________the human race in the next few decades

A. fracture
B. confront
C. occupy
D. frustrate

More than $ 10 million in research costs has been lost a(an) _______nuclear safety problem.

A. abandoned
B. deduced
C. melted
D. resolved

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