The text deals with a short circuit situation in electric circuits. It is known that the electric current sharply raises when two or more wires with different electric potential are connected. It should be noted that a short circuit may be very damaging for the equipment involved. It is reported that a short circuit may cause a fire. Much attention should be paid to the diameter of connecting wires that can be heavily overloaded. It is stressed that fuses or other means of protection should be used in any circuit where a short circuit situation may occurr. Thus, all possible measures should be taken to avoid a short circuit.
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Объяснение:
1. Some governments have been trying to protect the environment for twenty years.
2. Have you been working at the TV studios since May?
3. Bill has been thinking about getting a new car for months.
4. Lesley has not been living in Meg's flat since last Christmas.
5. You have been eating too much since our holiday in March.
6. We have been looking forward to seeing you for weeks.
7. What have you been doing since last summer?
8. I have not been learning Spanish for very long.
9. Thomas has been writing his History essay since Saturday morning.
10. Have you been waiting for me for hours?
