4. What does pollution of soil reduce ?
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*Key:
I. Listen ( 2M = 0,5m/sentence)
*Tapecript: Solar energy is a long lasting source of energy, and it can be used
almost anywhere. To generate solar energy, we only need solar cells and the
sun ! Solar cells can easily be installed on house roofs, so we do not need any
new space. compared to other renewable sources, they also possess many
advantages: wind and water power rely on turbines which are noisy, expensive
and which take up large space. Solar cells are totally silent and non - polluting.
As they have no moving parts, they require little maintenace and have a long
lifetime.
1B 2C 3A 4D
II. Give correct forms of the words in the brackets ( 2M)
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