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Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).
A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.
B The main problem was that it could not be used during the night or on foggy days.
C These messages could be sent very quickly.
D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.
E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.
F A system was built between London and the south coast, and other countries followed.
War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.
Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.
The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 (A )
Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( C). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.
Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 (F ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.
Unfortunately, Chappe's system had some disadvantages. 5 ( B) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.
Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).
A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.
B The main problem was that it could not be used during the night or on foggy days.
C These messages could be sent very quickly.
D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.
E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.
F A system was built between London and the south coast, and other countries followed.
War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.
Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.
The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 (A )
Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( C). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.
Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 (F ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.
Unfortunately, Chappe's system had some disadvantages. 5 (B ) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.
Like other big cities in Asia , Hanoi began to (1)..................... the tram system in the early 1900s. A few years later , due to its cheap fares and convenience , this system rapidly became one of the most popular means of transport.There were five tram routes with HoanKIem Lake as a central station for residents to get (2)................... the city and to the suburan areas. However ,beacause of the population boom and the urgent demand for upgrading the more mordern road system , the rail tracks were (3)....................... removed and completely disappeared in 1990.
These days ,the fact that the population of the capita; has risen tremendously results in a dramatic increase in the number of vehicles on the roads . To meet the incresing travel demands and reduce traffic congestion , the first 13 - kilometre skytrain aystem , connecting Cat Linh va Ha Dong is (4).................. and it is expected to be completed by 2018 .Each four -compartment skytrain with the length of approximately 80 metres and the height of about 3.8 metres has a capacity of 1,362 passengers .Additionally , a new rail system includingover eight kilometres of skytrain rail and four kilometres of submay rail , (5)......................... links Hanoi Central Station to Nhon ,also has being built recently .The capacity of each skytrain in this efficent high-speed rail sustem is roughly 1,200 passengers.
1, A discover B improve C operate D install
2, A around B over C By D ahead
3, A occasionally B gradually C regularly D eventually
4, A pressed B launched C produced D announced
5 A which B what C whose D where
The London Underground, or theTube, is the popular public transportation system of London. The concept for the London Underground was first proposed in the 1830s, by a lawyer called Charles Pearson. However, not until 1863 was the first section of the Underground built, and opened to the public. On its opening day, it transported 38,000 passengers, and within the first year it had been used b> 93 rr ion passengers.
The system has been improved significantly over the past century, and now it includes twelve lines serving Greater London, operating from 5.00 am through to 1.00 am, Monday to Saturday. On Sundays, it operates a reduced service. For the passengers' conveniencer the system is also interconnected with the overground train network which link to other parts of the country outside London.
To enable passengers to get around easiy. London Underground maps are distributed freety at afl stations. Along with a plan of the Tube system, the free maps contain useful tips for safe and efficient travelling. The map itsetf is a design classic, with the various lines indicated in different colours and dearly indicated junctions showing the stations where passengers can change between lines.
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