TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Liquid crystals lack the full _ dimensional position and orientation order of ordinary crystals.

SOLUTION: three

PROBLEM: Cigarette smokers have up to a _ times higher incidence of bladder cancer than non-smokers.

SOLUTION: four

PROBLEM: Some people have mild signs of illness or _ symptoms at all.

SOLUTION:
no