Xenon has a number of applications, _______ may be mentioned its use in flash lamps for high-speed photography.

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问题 Xenon has a number of applications, _______ may be mentioned its use in flash lamps for high-speed photography.

选项 A、Among which
B、which
C、and which
D、each of which

答案A

解析关系代词在定语从句中做介词宾语。

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专业英语四级

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