在日常生活中经常需要根据调查来获得一些数据,比如调查自己班同学最喜欢的球类活动,调查全校同学家庭1周内丢弃的塑料袋数量等等.在调查活动中,一个非常重要的问题就是要保证数据的真实可靠.一般情况下,被调查的人总是会如实回答自己的情况,但是当被问及敏感的问题时(如“你是 In daily life, it is often necessary to obtain some data based on surveys, such as investigating the favorite ball activities of classmates in their class, investigating the number of plastic bags discarded by the entire school classmate within one week, etc. In the investigation activities, a very important issue It is to ensure that the data is true and reliable. Under normal circumstances, the person being investigated will always truthfully answer their own situation, but when asked about sensitive issues (such as "You are