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Try to make sentences about optical fibres with the matched word phrases from ex.10



12. Do a crossword. What is hidden on the vertical highlighted line?

                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                             
1. Copper cables are usually about 120 ………………. in diameter.
2. The speed limit in Russia is 90 kilometres …. hour.
3. A pipe or a tube that carries liquid, gas, electric or telephone wire.
4. To start to burn; to make something start to burn.
5. The amount of something that a certain container can hold
6. A line across a circle.
7. To take something (ex. letters) to the place according to the address.
8. An opposite to the word "easy".
9. A line of pipes that are used for carrying liquid or gas over a long distance (usually underground).
10. Amount of information that a particular computer network or Internet connection can send in a second.
11. When you take something in your hand and move from one place to another; a synonym to "conduct" electricity.
12. To control or manage something; to work with something; to deal with something (a problem, task, etc …); to touch with your hands.



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