即刻

With the development of society, people are paying more and more attention to preschool education.

随着社会的发展，幼儿教育越来越受到人们的重视，幼儿教师性别结构单一的问题也引起了人们的极大关注，幼儿教师性别结构不平衡所造成的诸多问题也随之浮出水面。

The paper studies the shortage of traditional watercourse protection mode,the development and present research con- dition for ecological protection in inland and abroad.

主要研究了传统河道护坡方式的缺点及生态防护在国内外的发展及其现状。