¿A que no sabes ...? : curso de perfeccionamiento de español para extranjeros. [Hauptband]

"Destinado a estudiantes que, partiendo de un nivel inicial, aspiran a un dominio practico del espanol comunicativo y a un acercamiento a la cultura de los paises hispanos. En dos niveles, describe el funcionamiento de la lengua y practica cuestiones morfosintacticas atendiendo a la realidad de su uso."

"Viaja por el cuerpo humano, de la cabeza a los pies, y descubre las maravillas que alberga nuestro interior. l cuerpo humano es una guía completa ilustrada de los distintos sistemas del cuerpo y de su funcionamiento. Cientos de diagramas detallados a todo color te ofrecen explicaciones visuales de todas las partes del cuerpo. Textos informativos exponen claramente todos los aspectos de la anatomia. Los sistemas y las funciones del cuerpo se describen por separado en apartados y capitulos codificados por colores. Redactado por expertos y asesores en medicina, el texto es claro, conciso y...

Uncovers the secret codes that different animal species use to relate to each other, revealing that communication among certain animals is not different from human communication.

Three Quarters Of Our Earth Is Blanketed By Water. How This Water Is Used, From Bathing To Irrigating Crops Is Addressed. That Water Travels In A Never-Ending Pattern Called The Water Cycle. Tips On How To Conserve Our Most Important Natural Resource Are Included.

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther.