听力原文:The idea of permanent education is practical because people are never really too

听力原文：The city of Maple Falls would like to inform. all residents of the following upco

听力原文： Here in Washington, the Clinton Administration is reaffirming the importance of

听力原文： Under normal conditions the act of communication requires the presence of at lea

听力原文：Because of the decreasing sales of the products at the end of the year, the sales

听力原文： According to a new study done at the Medical school of the University of Califor

听力原文:In science the meaning of the word explain suffers with civilizations every st