Глаголы в форме Present Simple или Present
Continuous.
1. Her father (not to watch) TV at the moment. He (to
sleep) because he (to be) tired.
2. Where your uncle (to work)? - He (to work) at
school.
3. Your friend (to do) his homework now?
4. When you usually (to come) home from school? - 1
(to come) at four o'clock.
5. My sister (not to play) the piano now. She (to play)
the piano in the evening.
6. You (to read) a magazine and (to think) about your
holiday at the moment?
7.I (to sit) in the waiting room at the dentist's now.
8. When you (to listen) to the news on the radio?
9. You (to play) chess now?
10. My father (not to work) at the shop.
11. Look at the sky: the clouds (to move) slowly, the
sun (to appear) from behind the clouds, it (to get)
warmer.
12. I (not to drink) coffee in the evening. 1 (to drink)
coffee in the morning.
13. What your friend (to do) now? - She (to wash) the
dishes.
14. Your grandfather (to work) at this factory?​

Plastics are non-metallic, synthetic, carbon-based materials. They can be moulded, shaped, or extruded into flexible sheets, films, or fibres. Plastics are synthetic polymers. Polymers consist of long-chain molecules made of large numbers of identical small molecules (monomers). The chemical nature of a plastic is defined by the monomer (repeating unit) that makes up the chain of the polymer. Polyethene is a polyolefin; its monomer unit is ethene (formerly called ethylene). Other categories are acrylics (such as polymethylmethacrylate), styrenes (such as polystyrene), vinys (such as polyvinyl chloride (PVC)), polyesters, polyurethanes, polyamides (such as nylons), polyethers, acetals, phenolics, cellulosics, and amino resins. The molecules can be either natural — like cellulose, wax, and natural rubber — or synthetic — in polyethene and nylon. In co-polymers, more than one monomer is used.The giant molecules of which polymers consist may be linear, branched, or cross-linked, depending on the plastic. Linear and branched molecules are thermoplastic (soften when heated), whereas cross-linked molecules are thermosetting (harden when heated).Most plastics are synthesized from organic chemicals or from natural gas or coal. Plastics are light-weight compared to metals and are good electrical insulators. The best insulators now are epoxy resins and teflon. Teflon or polytetrafluoroethene (PTFE) was first made in 1938 and was produced commercially in 1950.Plastics can be classified into several broad types.1. Thermoplastics soften on heating, then harden again when cooled. Thermoplastic molecules are also coiled and because of this they are flexible and easily stretched.Typical example of thermoplastics is polystyrene. Polystyrene resins are characterized by high resistance to chemical and mechanical stresses at low temperatures and by very low absorption of water. These properties make the polystyrenes especially suitable for radio-frequency insulation and for parts used at low temperatures in refrigerators and in airplanes. PET (polyethene terephthalate) is a transparent thermoplastic used for soft-drinks bottles. Thermoplastics are also viscoelastic, that is, they flow (creep) under stress. Examples are polythene, polystyrene andPVC.2. Thermosetting plastics (thermosets) do not soften when heated, and with strong heating they decompose. In most thermosets final cross-linking, which fixes the molecules, takes place after the plastic has already been formed.Thermosetting plastics have a higher density than thermoplastics. They are less flexible, more difficult to stretch, and are less subjected to creep. Examples of thermosetting plastics include urea-formaldehyde or polyurethane and epoxy resins, most polyesters, and phenolic polymers such as phenol-formaldehyde resin.3. Elastomers are similar to thermoplastics but have sufficient cross-linking between molecules to prevent stretching and creep.

Объяснение:

My Favourite Writer (M. Lermontov)

One of Russia's most celebrated poets of all times, Michael Lermontov was born in Moscow in the family of a nobleman. He spent his childhood and youth in Tarckany, in the province of Penza.

In 1830 Lermontov entered the Moscow University, but very soon he had to leave it. Then he entered St. Petersburg School of Cavalry Cadets. He finished it and served in the Hussar Regiment of the Imperial Guard.

In 1837 the poet was exiled to the Caucasus for his poem "Poets Death". In 1840 Lermontov was exiled to the Caucasus for the second time. He was provoked into personal quarrel with his schoolmate. The quarrel led to a duel. On July 15th, 1841 the poet was killed. He was not even 27 at that time.

Lermontov began writing when he was very young. One of his first writings to be published was his verse tale "Hadji Arbek".

But he won fame as a poet after his poem "Poets Death" was published. Lermontov's poems "Demon" "Mtsyri" his great novel "A Hero of Our Time" and his play "Masquerade" are masterpieces of Russian literature.

Whether he wrote poetry, drama or prose, the stamp of his genius was to be found on his works. Lermontov's influence as of a poet and a thinker on all Russian writes can't be overestimated.