问题
选择题
“If the government does not give any feedback or does not release a final report of the survey, the respondents will think they participated _______," said the social scientist Hu.
A．in no way
B．in vain
C．without effort
D．at a loss
答案
答案：B
in no way 决不；in vain枉费心机；徒劳无益；白费力气；without effort 轻松地; at a loss不知所措；困惑; in vain符合语境。