переведите текст: atom and electron present atomic theories, based on the atom model, place the mass and the positive charge of an atom in a central nucleus, surrounded by moving electrons. the nucleus is composed of neutrons and protons. neutrons have a mass approximately one-sixteenth that of the mass of the oxygen atom and have zero electrical charge. the proton has a mass slightly lighter than that of the neutron and approximately equal to the mass of the hydrogen h. the chemical elements are differentiated by varying numbers of protons and neutrons in the nucleus, numbers of protons being equal to the atomic number, hydrogen having one, helium two, and so on. the electron is the smallest known indivisible unit of electric charge. early experimenters succeeded in the measuring the ratio of the charge of the electron to mass, and in 1910 the charge was first measured, thus determining these properties of the electron. the electron appears to have a dual personality, at times being best thought of is a particle, and in other experiments seeming to require wave properties for a satisfactory explanation of the phenomena.

Современные атомные теории, основанные на атомной модели, располагают массу и положительный заряд атома в центральном ядре, окруженном двигающимися электронами. Ядра состоят из нейтронов и протонов. Нейтроны имеют массу приблизительно в одну шестнадцатую массы атома кислорода и нулевой электрический заряд. Протон весит немного меньше нейтрона и примерно эквивалентен массе водорода H. Химические элементы разделяются по различающемуся количеству протонов и нейтронов в ядрах, количество протонов эквивалентно атомному номеру, водород имеет номер один, гелий два и так далее.  Электрон это наименьшая известная неделимая частица с электрическим зарядом. Ранние экспериментаторы преуспели в измерении отношения заряда к массе, и в 1910 заряд был впервые измерен, таким образом определяя эти характеристики электрона. Электрон выявляет двойственные качества, временами проявляя качества вещества, а в других экспериментах требуют признания у него волновых качеств для правильного объяснения феномена.

1. Tomorrow I have to go to the store.2.Do  You often have to wash the floor?3. They do not need to go by train. They can go by bus.4. You do not need to open the door. I'll do it.5. When he has to get up? - At seven in the morning.6. What does she have to do? - It will have to prepare breakfast2. Do You often have to wash the floor?3. They do not need to go by train. They can go by bus.4. You do not need to open the door. I'll do it.5. When he has to get up? - At seven in the morning.6. What does she have to do? - It will have to prepare breakfast

4 Choose the correct answers.1 The United Kingdom is … . b) a monarchy 2 The head of state is … .a) The Queen 3 The British Parliament sits in … .a)  one building 4 MPs are … .b)  the people who sit in the house of Commons5 What are Britain’s main political parties?a)  Labour and Conservative6 How do Members of Parliament get into the House of Commons?b)  British people elect them7 Who presides over the House of Commons?a)   the Speaker 
5 Fill in gaps. Use: when, who, which, that, where, whose.
Put commas where necessary.1 I need a friend __who___ will never let me down.2 Kate, __who__ is a teacher at our school, has never been abroad.
She is afraid of flying.3 My grandfather,_whose_ sweater you are wearing, was a very nice man.4 The theatre, that  you have seen in the pictures, isn’t far away from here.5 My friends went to Spain __where_ it’s warm and sunny.6 His parents were doctors __who_ worked in the hospital down the road.7 Look at Mary.  She has seen something __that___ scared her.8 The Pushkin novel,_which_ I like best,  is Barishnya Krestyanka.9 I’ve read a book __that_ was very interesting.10 The benches,   which__ are in the House of Lords,  are red.
6 Use the suffixes  –tion, or – ment  and form the nouns from the verbs.

Agreement,   election,   discussion,   explanation,   demonstration, improvement,   management,   information,   collection,   equipment.