单选题
Xenon has a number of applications, _______ may be mentioned its use in flash lamps for high-speed photography.
A、
Among which
B、
which
C、
and which
D、
each of which
【正确答案】
A
【答案解析】
[汉译] 氙有多种用途，其中之一就是用于一种可快速成像的闪光灯中。
[注释] 关系代词在定语从句中做介词宾语。
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