Blaise Pascal (1623-1662) hombre de su tiempo, concilió el estilo del pensamiento directo con el arte de una retorica persuasiva, que empleaba a un tiempo la paradoja, el asombro y la sorpresa. Esta caracterÃstica estarÃa presente por igual en los dos objetos de su estudio: las ciencias fÃsicas y la antropológica cristiana.
Interchange Fourth Edition is a four-level series for adult and young-adult learners of English from the beginning to the high-intermediate level. Student's Book, Level 2 builds on the foundations established in Level 1 for accurate and fluent communication, extending grammatical, lexical, and functional skills. The Student's Book contains 16 teaching units, progress checks, additional Interchange activities, and a Grammar Plus section that provides additional grammar explanations and practice. Included is a Self-study DVD-ROM that provides the full class video and extra practice with vocabulary, grammar, speaking, listening, and reading. The DVD-ROM contains supplementary exercises. The corresponding Audio CDs are only sold separately.