We (mislead) ________ by villager.
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They are forced to (modification) _________ their plan.
Thelocalgovernmentistryingtoraisemoneyto (modern) ________ the city's public tansport systems.
Last night, I received a (mystery) ________call.
时间序列在长时间内呈现出来的某种持续上升或持续下降的变动称为()。
A. 趋势
B. 季节变动
C. 循环波动
D. 不规则波动