【C18】
A．variance
B．variety
C．variation
D．variable
请帮忙给出正确答案和分析，谢谢！
【C8】A．numberB．varietyC．sumD．series
【33】A．rulerB．parameterC．scaleD．variable
【C8】A．possibilityB．capabilityC．abilityD．variability
【C2】A．varianceB．variationC．variableD．various
A．variationB．varietyC．varianceD．variable
【C14】A．varietyB．variableC．variationD．vanity
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