问题描述：
一道SAT英语语法题
The gong,believed to have originated in Western Asia,reached China in the sixth century,where it continues to be used for a wide range of purposes,（including as） a military signal,a rhythmic accompaniment for vocal performance,and a ritual instrument.
括圈里面是需要替换的部分,其实不用替换这个就是正确的用法,而我选择的是which include.请英语帝解释这里问什么要用including as 为什么include要加ing难道没错吗?
一楼，但是正确的答案是不做任何改变，including as 是正确的！
The gong,believed to have originated in Western Asia,reached China in the sixth century,where it continues to be used for a wide range of purposes,（including as） a military signal,a rhythmic accompaniment for vocal performance,and a ritual instrument.
括圈里面是需要替换的部分,其实不用替换这个就是正确的用法,而我选择的是which include.请英语帝解释这里问什么要用including as 为什么include要加ing难道没错吗?
一楼，但是正确的答案是不做任何改变，including as 是正确的！
问题解答：
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