In the modern technological world the sea offers many resources to help mankind survive. R

esources on land are beginning to grow less. The sea, however, still offers hope to supply many of man’s needs.

The riches of the sea yet to be developed by man ’s technology are impressive. Oil and gas explorations have existed for nearly thirty years. Valuable amounts of minerals such as iron, nickel and copper and so on exist on the ocean floor, ready to be mined.

Fish farming promises to be a good way to produce large quantities of food. The culture of fish and shellfish is an ancient skill practiced in the past mainly by Oriental peoples.

Besides oil and gas, the sea may offer new sources of energy. Experts believe that the warm temperature of the ocean can be used in a way similar to the steam in a steamship. Ocean currents and waves offer possible use as a source of energy such as hydroelectric power.

Technology is enabling man to explore ever deeper under the sea. The new undersea technology is providing divers with diving suits and undersea chambers that are kept at sea level pressure. The development of strong, new materials has made this possible.

The technology to harvest the sea continues to improve. By the year 2000, experts believe that the problems to exploit the food, minerals, and energy sources of the sea will be largely solved.

What is the best title for the passage？

A.Needs of .Man

B.Sources of..Energy

C.Sea Harvest

D.Sea Exploring Technology

According to the author, technology for exploring the sea is important because______.A.man cannot travel farther into space

B.resources on land are running short

C.it’s a lot of fun diving into the sea

D.ancient people used to explore the sea

Why does the author mention a steamship？A.To indicate that it is warmer in the ocean than on land.

B.To show that a steamship is better than other kinds of ship.

C.To argue that man should use steamships more than other means of transportation.

D.To illustrate that man can make use of sources of energy from the sea.

It can be inferred from the passage that_______.A.man hasn’t completely developed the riches of the sea

B.technology for exploring the sea has been solved

C.planting rice in the sea will be made possible in a short time

D.in the near future man can live on the ocean floor

The word “exploit” in the last paragraph could best be replaced by________.A.evaluate

B.develop

C.gather

D.scatter

请帮忙给出每个问题的正确答案和分析，谢谢！