It only takes a fraction of a second for the computer to do the____which used to take days.
A. conclusion
B. experiment
C. explanation
D. calculation
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The price of been_____from 50 cents to $4 per liter during the summer season.
A. flowed
B. ranged
C. separated
D. differed
_____
A. explosion
B. decision
C. occasionly
D. procession