España, ayer y hoy + CD-ROM

Black holes are neither holes nor black. They're invisible and packed with matter! Future astronomers will find out many more fascinating facts about these space phenomena with this intriguing book. Carefully crafted text encapsulates the most important information about black holes, such as how scientists locate them and their significance in a star's life cycle. Amazing photographs support critical concepts and inspire a true appreciation of the spectacles of space.

Este tercer nivel permite al alumno desarrollar la competencia comunicativa -lingüística, sociolingüística y pragmática- necesaria para desenvolverse eficazmente en ámbitos cotidianos y académicos. En su diseño se han seguido las recomendaciones delMarco de Referencia Europeo. Consta de un episodio introductorio y de seis episodios temáticos estructurados en los siguientes apartados; Secuencias de la vida real. Preguntas de comprensión. Breve juego de rol. Refuerzo de la comprensión auditiva.Encuadre gramatical. Presentación y práctica de los contenidos gramaticales a través de...

Modeled after the adult version of Oracional bilingüe: A Prayer Book for Spanish-English Communities, this volume for children encourages prayer across national, cultural, and linguistic borders. Oracional bilingüe para niños provides Spanish and English texts of the most loved and commonly used prayers in large, readable type and in an easy-to-follow, facing-page, parallel presentation. The English text appears on the left page, with the Spanish text directly across from it on the right. In addition, illustrations by well-known artist Gertrud Mueller Nelson complement each page and add to ...

Presents pairs of photographs of similar items, including a hot dog and an ice cream cone, and the sun and the sea, to introduce the difference between hot and cold.