33._____the average,the people’s income has been improved.A.In B.With C.On D.By选哪个,为什么?

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33._____the average,the people’s income has been improved.
A.In B.With C.On D.By
选哪个,为什么?

on average
平均上
on an average
平均而言
on the average
平均而言
用on 是固定结构,用其他的不对,讲不通了

选C
On the average一般说来,平均(固定词组)

C
固定搭配
on the average
平均, 按平均数计算; 一般地说

33._____the average,the people’s income has been improved.A.In B.With C.On D.By选哪个,为什么? average average average average AVERAGE Average ROE weighted average average是什么意思 average是什么意思? average是什么意思 average build Moving Average-ExponetialMoving Average-Exponetial OHLCMoving Average-RollingMoving Average-SimpleMoving Average-Simple OHLCMoving Average-TripleMoving Average-WeightedMoving Average-Weighted OHLCMoving Average centered这些是外汇操作时用到 on average与average的区别 above the average and below the average. above average height里average是什么词性? beyond average还是beyond the average? grade point average是什么意思