27. The authors of the research article are optimistic because . [A] their findings appeal to students [B] the recruiting rate has increased [C] the problem is solvable [D] their approach is costless
【参考答案及解析】
C
正在整理中,欢迎在文下评论区提供答案解析,谢谢!
C
正在整理中,欢迎在文下评论区提供答案解析,谢谢!