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Read the following passage and decide which answer (A, B, C, or D) best fits each gap. Write your answer in the numbered boxes.
“Living” walls reduce pollution in cities
Buildings covered in greenery are starting to appear in cities around the world. These living walls are the outside surfaces of buildings, bursting all over with vegetation. They certainly look pretty, but there's a far more interesting reason (1) _______ their existence.
According to biochemists, the green walls - which are covered with pre-planted panels offer several (2) _______ besides disguising an ugly facade. They have been (3) _______ to cool the building down, reduce noise, and make the block more energy (4) _______.
But (5) _______ is really exciting is that green walls could potentially reduce air pollution in the 'corridors' between tall buildings on a street. As the wind (6) _______ through these man-made canyons, carrying with it traffic fumes and other environmental pollutants, the green walls appear to (7) _______ large amounts of the most harmful chemicals in the air. This could be the perfect (8) _______ to the difficulty of improving air quality in some of the planet's most polluted cities.
1. A. of B. for C. in D. with
2. A. profits B. values C. benefits D. positives
3. A. demonstrated B. convinced C. accepted D. proved
4. A. efficient B. practical C. economical D. appropriate
5. A. there B. it C. this D. what
6. A. runs B. travels C. rolls D. flies
7. A. soak B. breathe C. take D. absorb
8. A. solution B. action C. result D. reaction
“Living” walls reduce pollution in cities
Buildings covered in greenery are starting to appear in cities around the world. These living walls are the outside surfaces of buildings, bursting all over with vegetation. They certainly look pretty, but there's a far more interesting reason (1) _______ their existence.
According to biochemists, the green walls - which are covered with pre-planted panels offer several (2) _______ besides disguising an ugly facade. They have been (3) _______ to cool the building down, reduce noise, and make the block more energy (4) _______.
But (5) _______ is really exciting is that green walls could potentially reduce air pollution in the 'corridors' between tall buildings on a street. As the wind (6) _______ through these man-made canyons, carrying with it traffic fumes and other environmental pollutants, the green walls appear to (7) _______ large amounts of the most harmful chemicals in the air. This could be the perfect (8) _______ to the difficulty of improving air quality in some of the planet's most polluted cities.
1. A. of B. for C. in D. with
2. A. profits B. values C. benefits D. positives
3. A. demonstrated B. convinced C. accepted D. proved
4. A. efficient B. practical C. economical D. appropriate
5. A. there B. it C. this D. what
6. A. runs B. travels C. rolls D. flies
7. A. soak B. breathe C. take D. absorb
8. A. solution B. action C. result D. reaction
