The ______ of new traffic signals on Baker Street has been only moderate-ly succ

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问题 The ______ of new traffic signals on Baker Street has been only moderate-ly successful in lowering traffic con-gestion.

选项 A、designs
B、installments
C、applications
D、modifications

答案 B

解析词汇题。design意为“设计”；application意为“运用”，常与介词to搭配使用；modification意为“修正，修改”；installment意为“安装”；根据句意，交通信号灯的安装，最符合题意，故选B。

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The______ofnewtrafficsignalsonBakerStreethasbeenonlymoderate-lysucc