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Summaries - The 20th century and the world today
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1. Conflicts in the 20th and 21st century During the 20th century, there were two great wars: the First World War (1914-1918) and the Second World War (1939-1945). They were different from previous wars…
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Summaries - Machines and structures
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1. Electrical current An object becomes electrically charged when it contains an electrical charge. Some objects become electrically charged when we rub one against the other. For example, when you rub…
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Self-assessment T10 10 - Machines and structures
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Are these sentences true or false? The structure of a building must be stable and resistant. The structure of many buildings consists of a system of girders, beams and pillars. The beams form the base…
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Complete. Objects reflect light
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Complete this text with the correct words: When light shines on an object, sometimes it passes through the object and other times it reflects off it. When an object light, we can see it. For example, we…
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Think and answer. Science and technology
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Think and answer: Describe what you can see in the photos. Give examples of scientific progress in the 20th century. Do you use the Internet? What do you use it for? What is an e-mail? How do you send…
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Complete. E-mail
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Complete this text with the correct words: E-mail (or electronic mail) is a system of sending from one computer to another. It is the most popular on the Internet. The person who sends the message (or…
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Completa. O clima galego
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Completa as seguintes frases con estas palabras : costa – observatorios – oceánico – climogramas – montaña – costa – montaña – regulares – abundantes O clima de Galicia é de tipo .…
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O sector terciario: comercio e turismo
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O sector terciario O sector terciario ou sector servizos abrangue unha gran cantidade de actividades que non producen bens materiais, senón que satisfán as necesidades sociais das persoas: o comercio,…
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Selecciona. Poboación e economía en Galicia
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Indica que frases describen as características da poboación e da economía de Galicia: A meirande parte da poboación galega é rural e xa que logo dedícase á agricultura e á gandaría. A…
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Cavila. Temperatura corporal
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As aves, xunto cos mamíferos, son animais de temperatura constante. Os demais vertebrados e todos os invertebrados, pola contra, teñen unha temperatura corporal variable, isto é, que vai cambiando…
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