It______on the Internet with respondents who volunteered to participate, and was

游客2024-10-14 31

问题 It______on the Internet with respondents who volunteered to participate, and was not a scientifically random survey.

选项 A、were conducting
B、were conducted
C、had been conducted
D、had conducted

答案 C

解析

转载请注明原文地址:https://tihaiku.com/zcyy/3800187.html

相关试题推荐

随机试题

最新回复(0)

Accordingtoareport【C1】______yesterdaybytheChinaInternetNetworkInfor