If being carried out successfully，the plan will completely change the -考呗网

单选题If being carried out successfully，the plan will completely change the traffic conditions in the city．

A[分析]结构应用
本句考察的是省略的用法：当状语从句的主语和主句的主语相同时，状语从句可以用分词短语作状语。本句完整的句子应为“if it is carried out successfully…”，变成省略句时，直接用“if+过去分词”，因此A为答案。

1Coming at the Town Hall，the Queen was welcomed by the Mayor．

2The lenient decision of the dean caused anger among the professors．

3When he realized he had been suggested to sign the contract by intrigue，he threatened to start legal proceedings to cancel the agreement．