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题库 / OG2017V-SC-239
The psychologist William James believed that facial expressions not only provide a visible sign of an emotion, actually contributing to the feeling itself.
emotion, actually contributing to the feeling itself
emotion but also actually contributing to the feeling itself
emotion but also actually contribute to the feeling itself
emotion; they also actually contribute to the feeling of it
emotion; the feeling itself is also actually contributed to by them
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not only...but also...平行结构，it指代feeling本身
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