The floor of the ocean have many riches that can be used by man.Oil and chemicals and minerals already are taken from th

The floor of the ocean have many riches that can be used by man.Oil and chemicals and minerals already are taken from the sea.By using nuclear energy,ocean water can be turned into fresh water by taking the salt out.In the near future,it is possible for human beings to produce food from farms under the sea.Food grown in the sea could help to meet the needs of population all over the world which is increasing fast.Thousands of people go hungry every day.About ten to fifteen percent of the world’s people do not have enough food.Some scientists believe that some day the sea will be used to make electric power.This would help to meet the need for more power for the world’s industries.The decreasing supply of coal,oil and gas shows that the need to find new kinds of power is urgent.
36.Human beings have already made use of __________.
A) unclear energy in the lab under the sea
B) salt water resources as fresh water
C) minerals,chemicals and oil taken from the sea
D) farms under the sea
37.We can learn from the passage that_________.
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
38._____________ can be used to turn salt water into fresh water.
A) Nuclear power
B) Electric power
C) New kinds of power
D) Chemicals and minerals taken from the sea
39.It is urgent to find new kinds of power because __________.
A) the world’s population is increasing day by day
B) scientists are worded (宣告) 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
40.The best title of the passage is ___________.
A) To Find New Kinds of Power Is Urgent
B) The Increasing of the World Population
C) Riches of the Sea
D) Man Can Farm under the Sea in the Future