Recursos para estudiantes de inglés de todos los niveles, profesores y traductores. Para aprender o mejorar tu inglés en forma divertida.
Listening Comprehension - Comprensión Auditiva

Cómo realizar este ejercicio de comprensión auditiva

- Siempre encontrarás una pequeña introducción, que puede ayudarte a comprender el tema tratado.

- En los textos presentados se han ocultado algunas palabras, que deberás escribir en los casilleros correspondientes. A medida que lees el texto, escucha el audio con atención para descubrir dichas palabras.

- Quizás puedes deducir las palabras sin necesidad de escuchar el audio. Pero, pon atención al audio para confirmar si realmente se trata de la respuesta correcta.

- Puedes escuchar el audio cuantas veces sea necesario. Pero es recomendable hacerlo solamente dos veces (o tres veces como máximo) ya que esa es la forma en que normalmente se realizan estos ejercicios en exámenes y pruebas internacionales.

- Comprueba tus aciertos pulsando el botón "Corregir". Si no has podido completar todas las palabras, pulsa el botón "Solución" para ver cuáles eran las que te faltaban.

Home Gardening: What to Do About Lead
Topic: The first step is to test soil to see if there is a danger. Transcript of radio broadcast. Source: VOA

Escucha el audio y completa los recuadros.

This is the VOA Special English Agriculture Report.

Soil naturally contains harmless amounts of lead, along with other metals. Because of pollution, however, the amounts are higher the closer you get to cities and towns. But experts say this should not stop gardeners from growing if they take safety measures.

David Johnson is a chemistry professor in the State University of New York's College of Environmental Science and Forestry. He explains that lead can enter the from leaded paint and leaded fuel and from industry.

And once lead gets into the soil, it stays a long . It remains an environmental threat especially to children. Lead can harm mental and physical development even in babies before they are born.

If a test finds that soil has too much lead, you might be advised to remove the soil or cover it with sod grass. Different have different levels that they consider acceptable.

Carl Rosen of the University of Minnesota Extension notes that concerns about lead have increased now that more people are planting gardens. But Professor Rosen says plants generally do not much lead. He says there is likely more risk from lead dust on plants or from playing in the soil than from the plant itself.

Still, some plants do absorb more than others. Experts say good choices for the garden include , peppers, beans and okra. Among the plants that can absorb more contaminants, they say, are root crops, leafy vegetables and . If you grow carrots, for example, you might want to peel them. Dirt may be harder to remove from some crops than from others. But all produce should be washed.

Gardens should be planted away from roads and structures, especially old buildings. Home gardeners should plant away from the foundation of their . And lead amounts can be especially high near industrial areas and waste dumps.

Soil should also be tested for its pH level, a measure of the acid and alkaline balance. Experts say the ability to take up lead is when the pH level is above six and a half. Adding organic material such as compost to soil can also make lead less available to plants.

Some people attempt a process called phytoremediation. They try to remove lead from soil by growing certain plants that collect it. But Professor Rosen says the process is and may not work.

And that's the VOA Special English Agriculture Report, written by Jerilyn Watson. For more gardening information, go to voaspecialenglish.com. I'm Steve Ember.

Score:
   

Más ejercicios similares: Nivel Principiantes - Nivel Intermedio - Nivel Avanzado

Libros recomendados (Ad)

 

Listening Power 1

Este es el primer libro de la serie, que explica las técnicas para mejorar la comprensión auditiva, cómo escuchar la idea principal e inferir detalles, cómo entender diálogos de películas, programas de radio y televisión. Ver más

 

Active Listening 1 Student's Book

Este libro contiene actividades para aprender a escuchar los detalles, aumentar el vocabulario, y a su vez mejorar la pronunciación. Contiene un CD de audio para practicar. Ver más

 

Clear Speech Student's Book

Este libro ayuda a los estudiantes a pronunciar y comprender correctamente el inglés americano. Con una presentación fácil de seguir, muchas ilustraciones y gran cantidad de ejercicios. Ver más

Bookstore
Libros gratis Practica inglés leyendo obras maestras de la literatura inglesa y norteamericana. Puedes obtener los libros gratis para descargar y leer en tu PC, tablet o ebook-reader. Visita la sección Free Books.

 

Vocabulary
Fichas Aprende o practica vocabulario de inglés con flashcards: divertidas tarjetas interactivas con imágenes

 

That's curious!
SandwichThe word sandwich comes from the English diplomat John Montagu, 4th Earl of Sandwich. He was such a compulsive gambler that to avoid stopping the game to eat, he would order that this kind of food was brought to his table so as not to waste too much time.

Descubre el origen de las palabras en
The Story behind the Words

 

Recommended book (Ad)

Libro
Inglés para Dummies

Explicaciones en español. Incluye CD.

Comprar
Más libros similares

 

SaberInglés


 



As an Amazon Associate we earn from qualifying purchases.

© Copyright - Saber Inglés - 2000-2024
All rights reserved. Reproduction is prohibited.
Privacy Policy - Disclosure