First designated in 1970, Earth Day has become an annual international event ___

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问题 First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.

选项 A、dedicated to raising
B、dedicated raising
C、dedicated to raise
D、that dedicates to raising

答案 A

解析 dedicated to表示“把……奉献给”，“把……用在”，这里的to是一个介词，后跟-ing形式。

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