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　　Oil can be used in many ways and it’s difficult to imagine what the modem world will be like without oil. But oil isn’t easy to find and get out of the earth. Men must study the rocks. When they think the rocks in a certain place may have oil, a metal tower is built, a machine in the tower cuts a hole down into the ground. At the same time, a steel pipe（鋼管）is pushed down to stop the .sides from falling in and to keep out water. At last if the men are right, usually the oil rushes up the sides with great force（力量）by the pressure（壓力）of the gas in the top of the rock, and it rushes high into the air. If the oil catches a light, there will be a terrible fire,. So a kind of cover is fixed on the top of the pipe, and the oil can run out through taps（活塞）.

(1) The word“exploitation”in the passage means ________.

(3) Which of the following can be true according to（根據(jù)）the passage?

A．Coal gas can’t be used in houses and factories.

B．Oil is very important in the modem world.

C．Many governments encourage people to waste oil as much as possible.

(4) According to the passage, the right picture to show the tendency（趨勢）to the amount of oil on the earth is.

A．The Exploitation of Oil

B．The Use of Oil

C．The price of Oil