Researchers who surveyed more than 1100 avid Facebook-using adults found that receiving messages from friends boosted feelings of connectedness. Here the meaning of“avid”is.（ ） A.热心肠的 B.贪婪的 C.有野心的 D.热衷的
正确答案：D
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Researchers who surveyed more than 1100 avid Facebook-using adults found that receiving messages from friends boosted feelings of connectedness. Here the meaning of“avid”is.（ ） A.热心肠的 B.贪婪的 C.有野心的 D.热衷的
正确答案：D
