Read the text. Then choose the correct answer for the gaps 29-31 in th

190. (v13-111-29) Read the text. Then choose the correct answer for the gaps 29-31 in the text. The hot lamp loses energy to the surrounding air - this is carried (29)... by a convection current. The light and infra-red radiation are absorbed by the walls and other (30)..., causing them to warm up. All the energy from the lamp (31)... into the room, causing a very small temperature rise. Almost all the energy that we take from sources such as electricity, gas, coal and petrol ends up as heat in our surroundings.

190. (v13-111-29) Read the text. Then choose the correct answer for the gaps 29-31 in the text. The hot lamp loses energy to the surrounding air - this is carried (29)... by a convection current. The light and infra-red radiation are absorbed by the walls and other (30)..., causing them to warm up. All the energy from the lamp (31)... into the room, causing a very small temperature rise. Almost all the energy that we take from sources such as electricity, gas, coal and petrol ends up as heat in our surroundings. B) away
D) about