(三)
(三)Which of the following is true according to the passage（）

A．Clinton broke ground for the c at both ends.
B．Clinton started building the c before he became governor.
C．All parts of the c were completed at the same time.
D．Construction of the c took eight years.

The Erie C was the first important national waterway built in the US. It crossed New York from Buffalo on Lake Erie Troy to Albany on the Hudson River. It joined the Great Lakes with the Atlantic Ocean. The c served as a route over which industrial goods could flow into the west, and materials could pour into the east. The Erie C helped New York develop into the nation’s largest city.

The building of the c was paid for entirely by the state of New York. It cost $ 7 143 789, but it soon gained its price many times over. Between 1825, when the c was opened, and 1882, when toll charges were stopped, the state collected $121 461 891.

For a hundred years before the Erie was built, people had been talking about a c which could join the Great Lakes and the Atlantic Ocean. The man who planned the Erie C and carried the plan through was De Witt Clinton. Those who were against the c laughingly called it "Clinton’s Ditch". Clinton talked and wrote about the c and drew up plans for it. He and Governor Morris went to Washington in 1812 to ask for help for the c, but they were unsuccessful.

Clinton became governor of New York in 1817, and shortly afterwards, on July 4, 1817, broke ground for the c in Rome, N. Y. The first part of the c was completed in 1820. As the c grew, towns along its course developed fast. The length of the c is 363 miles.