Понимание структурно-смысловых связей в тексте

Прочитайте текст и заполните пропуски A–F частями предложений, обозначенными цифрами 1–7. Одна из частей в списке 1–7 — лишняя. Занесите цифры, обозначающие соответствующие части предложений, в таблицу.

Flooding has become a grave concern for many areas of the UK. Possibly due to global warming, it seems that the UK is getting wetter and wetter as each year passes. Recent rains have ruined thousands of peoples homes A ________ .

The UK is no stranger to floods. For centuries citizens in London suffered from tidal surges that would creep up the river Thames and flood the city. For this reason, the British government decided to build a barrier, known as the Thames Barrier, B ________ .

Built in the late 1970s, the barrier has saved the country billions of pounds in building repairs. It has saved lives also; the 1928 Thames flood killed 14 people, and 307 people died in the North Sea flood of 1953. After this, the importance of building C ________ .

The barrier, constructed in southeast London, is a marvel to look at. The concrete barrier supports are topped with huge domes of polished steel that look very futuristic. The barrier works by tilting large platforms, D ________ , upwardly into a vertical position in order to block the flow of water. Since its construction, the floodgates have been closed over 160 times.

The barrier was built with the future in mind, and designed to withstand devastating flood conditions. At some point, however, it will have to be fortified, as estimates predict that it will lose E ________ . More will need to be done to extend its usefulness.

The barrier has been successful for London, but it was designed specifically to protect the capital city. In other regions of the UK, it will take more F ________ .

1. to protect the country’s wide expanses of rural farmland from flooding
2. a barrier was thrust to the forefront of government policy
3. and left many of them homeless for months
4. which have saved numerous lives in the decades since being built
5. a great deal of its protection powers after the year 2070
6. which lie flat on the river bed during normal sea and weather conditions
7. to keep the floodwater from spilling over into the streets