Прочитайте текст. In 1960s some students had an idea. They painted hundreds of bicycles white and pl...: ответ на тест 110096 - Английский язык

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In 1960s, some students had an idea. They painted hundreds of bicycles white and placed them around Amsterdam for people to use. They hoped to save energy, reduce pollution and provide free public transport. It didn’t work – thieves took all the bicycles within weeks!
However, more than thirty years later, the ‘white bike’ is back in town – this time with a computer chip to record its every move! To take a bicycle, you have to insert a special card. The new ‘white bike’ is an unusual design with bright colours so there’s no point in stealing one – everyone would know! There is already less traffic in central Amsterdam, because both locals and tourists have been using the white bikes.
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To take a bicycle, you…

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In 1960s, some students had an idea. They painted hundreds of bicycles white and placed them around Amsterdam for people to use. They hoped to save energy, reduce pollution and provide free public transport. It didn’t work – thieves took all the bicycles within weeks!
However, more than thirty years later, the ‘white bike’ is back in town – this time with a computer chip to record its every move! To take a bicycle, you have to insert a special card. The new ‘white bike’ is an unusual design with bright colours so there’s no point in stealing one – everyone would know! There is already less traffic in central Amsterdam, because both locals and tourists have been using the white bikes.
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To take a bicycle, you…

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Mother: «Could you do some shopping for me?»
Mary: «_______________»

Metals are materials most widely used in industry because of their properties. The study of the production and properties of metals is known as metallurgy.
The separation between the atoms in metals is small, so most metals are dense. The atoms are arranged regularly and can slide over each other. That is why metals are malleable (can be deformed and bent without fracture) and ductile (can be drawn into wire). Metals vary greatly in their properties. For example, lead is soft and can be bent by hand, while iron can only be worked by hammering at red heat.
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I’m fond of reading. In my opinion, books are a source of emotional inspiration and romantic feelings. Reading is very useful, because books enrich our experience with that of the other people. Besides, books help me to continue my own education.
I’m sure that a reader lives a richer life than a non-reader. The time spent on a good book is never wasted. Reading is a rewarding pastime. But some people think that the tempo of modern life is too fast to waste time on reading. They are sure that books have begun to lose their prestige and value. I disagree.

A new material as nylon has been accepted. It is material for the manufacture of bearings and runners of all sizes in many types of machines, earth-moving equipment and agricultural machinery due to its fundamental characteristics of low friction and good wear resistance. Nylon is a very versatile material and is capable of overcoming a wide range of difficult problems. It will operate satisfactorily without lubrication in an abrasive atmosphere. One of its features is that nylon functions under water or is immersed in any other liquid. Being non-toxic nylon is frequently used in food machinery. Nylon gears usually do not require lubrication, they are shock-resistant, do not deform permanently and – running in train with metal gears – they outlast them.
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When will nylon operate satisfactorily without lubrication?