The high resolution camera introduced last December has______been superseded as a result of recent technological developments.

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问题 The high resolution camera introduced last December has______been superseded as a result of recent technological developments.

选项 A、so
B、already
C、such
D、yet

答案B

解析本题需选择符合句意的副词。根据as a resultof recent technological developments和hasbeen superseded，最恰当的是(B)already(已经，早已)。

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