Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 44 to 50.
Cities are often noisy and dirty places, and many people prefer the peaceful atmosphere of the countryside, with open fields and forests. However, there are many good reasons to live in cities - jobs, exciting things to do and plenty of new people to meet. Some architects are now trying to bring the country into the city by creating ‘green skyscrapers’.
The Bosco Verticale in Milan is a skyscraper which tries to create a ‘forest in the sky’. It opened in 2014 and has two towers. Inside, it is mainly apartments, but there are also some offices. The special thing about this skyscraper is that there are nearly 1,000 trees, and also hundreds of smaller plants, growing all over it.
Skyscrapers like this are more difficult and more expensive to build. There are problems with planting trees so high up - not all kinds of trees can live in the strong winds at this height. Also, someone has to look after the plants, to water them in hot weather and cut them back when they grow too big, so they don't spoil the view for the people who live there. This could be a lot of work for the people who live there, but at Bosco Verticale, a special team of professional gardeners takes care of it.
But green skyscrapers also bring a lot of benefits. The trees and plants clean the air, keep the apartments cool in hot weather and reduce the amount of noise that people hear inside the building. More importantly, most people would agree that they are much more attractive to look at than the usual metal and glass. Some architects believe that over the next 20 years green buildings could change the skyline of our cities, to make them look more like forests.
