求翻译：上周我们对全校500名高三学生进行了一次关于21世纪最令人担忧的问题的调查,以下是调查的数据:就业问题占百分之十一,食品安全占百分之十一,环境污染占百分之二十九,住房问题占百分之十七,自然灾害占百分之三十二是什么意思？

Last week our school had 500 students in third year on the 21st century, a most worrying of the investigation, the following is the survey data: employment 11%, 11% of food safety, environmental pollution accounted for 29% housing 17%, natural disasters, accounting for thirty-two%

Last week we have 500 high school students from the 3 21 on the most worrisome problem of investigation, the following is a survey of the data: employment issues accounted for 11 % and 11 % of food safety, and environmental pollution, housing accounted for 29 % accounted for 17 % of natural disaster

Last week we have carried on to the entire school 500 high three students one time about the 21st century most anxious question investigation, the following are the investigation data: The employment question occupies 11%, food occupies safely 11%, the environmental pollution occupies 29%, the accom

Last week US 500 school students conducted a survey on the 21st century, the most worrying problem, the following is a survey of data: employment, 11% food safety 11%, environmental pollution, 29% housing 17%, natural disasters accounted for 32%

We carried on an investigation on most troubling question in the 21st century to 500 students in Senior three of whole school last week, the data investigated below: The employment question accounts for 11%, the food security accounts for 11%, the environmental pollution accounts for 29%, the housin