Water supply corporations is feazed by redwater even blackwater, users rebel for that, they even have suspicious with the watersupply corporations.

红、黑现象经常困扰各城市的供企业，对十分反感，甚至对自来的信誉产生了质疑。

The problem of dropping out in countries' junior school has become the important factor to feaze basic education and to carry out full diathesis education in this period.

农学生辍学问题，已经成为现阶段严重困扰我国基础教育和全面实施素质教育的重要问题。