1. (2021八上·长春期中) There are 50 students in Class 1. They went to different places on National Day（each student only went to one place）. According to the chart, ________ students went to Qionghai Wetland Park.

Laushan Mountain	Luoji Mountain	Qionghai Wetland Park	The Moon Lake Park
30%	40%	?	10%