Question

Below is a description of Geothermal Energy. Complete the passage by filling in the gaps choosing the correct option from the given options. The first one has been done for you.

In volcanic areas, underground water (a) can often rise to a temperature of 200° C. Nowadays, wells (b) __________ drilled to extract the steam which is used to drive turbines. This is (c) __________ of the world’s fastest growing sources of energy. (d) __________ the water is heated by enormous reservoirs of cooling rock several kilometers across, geothermal steam is (e) __________ to be a renewable energy resource. Even in non- volcanic areas, underground water can (f) __________ heated by natural radioactivity. In this case, (g) __________, it is necessary to drill deeper before the water is as hot as 200° C. This method (h) __________ used for heating homes in certain areas for many years and is cheap, clean and efficient.

(a) (i) could (ii) can (iii) must (iv) might	(b) (i) is (ii) been (iii) are (iv) being	(c) (i) any (ii) some (iii) one (iv) few	(d) (i) As (ii) While (iii) Though (iv) Even
(e) (i) called (ii) said (iii) regarded (iv) told	(f) (i) be (ii) been (iii) being (iv) is	(g) (i) however (ii) though (iii) despite (iv) therefore	(h) (i) being (ii) was (iii) be (iv) has been

Answer 1

In volcanic areas, underground water (a) can often rise to a temperature of 200° C. Nowadays, wells are drilled to extract the steam which is used to drive turbines. This is one of the world’s fastest growing sources of energy. as the water is heated by enormous reservoirs of cooling rock several kilometers across, geothermal steam is regarded to be a renewable energy resource. Even in non- volcanic areas, underground water can be heated by natural radioactivity. In this case, however it is necessary to drill deeper before the water is as hot as 200° C. This method has been used for heating homes in certain areas for many years and is cheap, clean and efficient.