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    The Three Gorges Dam，the largest dam，is also the largest engineering project on the face of the earth.It aims to make the mother of all floods，the Yangtze River，into a tame river，and to generate power of 181，200 megawatts for Eastern and Central China.It will form a huge，deep water lake，and make it possible for 10，000 tons ocean going ships to sail 1，500 miles inland from the Pacific to the city of Chongqing，making it one of the world's largest inland ports.
    Construction has already started.The dam is nearly 200 metres high and 1.5 kilometres wide，at a spot called Sandouping near Yichang.
    After many years of investigation（調(diào)研） experts have drawn a conclusion that such a grand project will do much good.It is the most important to control floods.By building hydropower plants instead of new coal plants to meet its growing demand for electricity，China will offer much in environmental protection.
However，some scientists don't agree to the project.They say that Chongqing and dozens of other cities along the river will pollute the reservoir，which can do harm to people，fish and other living things that depend on the river.Sedimentation（沉積） and damage of a breach（決口） are problems，too.
The Three Gorges Dam could be considered when it is finished，in 2009，the 8th wonder of the world.

（1）Is the Three Gorges Dam the largest engineering project on the surface of the earth？

Yes，it is.

Yes，it is.

（2）What's the most important advantage of the Three Gorges Dam？

Controlling floods.

Controlling floods.

（3）Why did the government insist on（堅(jiān)持）building the Three Gorges Dam？

Because it will do much good.

Because it will do much good.

（4）Do you think the Three Gorges Dam does more good than harm to us？Why or why not？

Yes.Because it will offer much in environmental protection.

Yes.Because it will offer much in environmental protection.