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The new constitutional and autonomic state
EduBook Organización
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2.1. The 1978 Constitution The Constitution was approved in Congress and the Senate and presented in the form of a referendum. The Spanish people voted it into law on 6th December 1978. The Constitution…
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Rocks and soil on the Earth's surface
EduBook Organización
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Types of rocks The Earth's crust is made up of three types of rock: igneous, sedimentary and metamorphic. Igneous rocks are formed when magma (a rock in a liquid state) cools. If the magma reaches…
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True / False. Lenses
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Are these sentences true or false? Lenses are pieces of glass or plastic in the form of a disc. They reflect light. Lenses are pieces of glass or plastic in the form of a disc. They use refraction to…
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Opposition to the state
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We want freedom and we believe that its existence is incompatible with the existence of any power, whatever its origin and form. (...) Evil, in the eyes of anarchists, is not in the form of government.…
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Superlative forms
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‘Tybalt was the most dangerous member of the family.’ Tybalt was the most dangerous member of the family. This sentence means that nobody in the Capulet family is more dangerous than Tybalt. the…
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Grammar - Go back to the text
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Countable and Uncountable Nouns Some nouns in English are countable. They have a singular and plural form. For example: an island → islands (noun + -s regular plural) a man → men (irregular plural)…
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Irregular past verbs
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Here are some verbs which have irregular past forms. Write the Past Simple form of each verb. buy bought feel forgive give hide throw fall find get hear tell wear Now put the correct Past Simple form of…
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Grammar - Go back to the text
EduBook Organización
1020 visitas
Past Simple Most verbs add -ed or -d to form the Past Simple form. For example: climb → climbed kill → killed live → lived work → worked Sometimes, when we add -ed, the spelling changes: stop…
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Heat and temperature
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2.1. What is temperature? When a body receives energy in the form of heat, it stores it in the form of internal energy and its particles move more quickly. Temperature is an indicator of the speed of a…
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Rules for Using Lay and Lie
Tiching explorer Organización
1 lo usan

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This lesson distinguishes when we should use "lay" and "lie", which are easily confused irregular verbs. First we learn their definitions, then we study examples. When we look at the…
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