英语翻译1.Anonymity precludes you from using any sort of code nu

英语翻译
1.Anonymity precludes you from using any sort of code number that can lead even you back to an identity for each respondent.
2.One drawback with all closed questions is that they can often be so directive as to be patronizing.
3.This method allows us to investigate a range of lexicographic research questions that were not feasible before.
4.Using questionnaires should not be embarked upon lightly,for they are difficult to handle well.