Where has Jack been working since his graduation£¿He has been working in______.

A£®nuclear energy in the lab under the sea

B£®salt water resource as fresh water

C£®minerals, chemicals and oil taken from the sea

D£®farms under the sea

A£®there are now many farms under the sea producing food

B£®more than one tenth of the world's people are suffering from hunger

C£®the supply of oil, gas and coal are increasing rapidly throughout the world

D£®it is unnecessary for man to make full use of the riches of the sea

A£®Nuclear power

B£®Electric power

C£®New kinds of power

D£®Chemicals and minerals taken from the sea

A£®the world's population is increasing day by day

B£®scientists are worried about the idea of making full use of the sea into realities

C£®nuclear energy cannot meet the need for more power for the world's industries

D£®the supply of coal, oil and gas is decreasing while the need for the world's industries is increasing