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The speaker talks about the role of inland waterways in the nation's growth of America.

A. 正确
B. 错误

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Which of the following statements is true about the relationship between the unemployment

A. The relationship between the two indexes in April is normal.
B. The relationship between the two indexes in April is not normal.
C. The two indexes always develop in the opposite direction, one increasing and the other declining.
D. The two indexes always develop in the same direction, both increasing or declining.

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Though inland waterways were important transportation system, they were soon replaced by the more convenient railroads.

A. 正确
B. 错误

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It takes longer time to travel by river is one of the major reasons that the inland waterway system was unable to compete with other forms of transportation.

A. 正确
B. 错误

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The decline of Atlantic seaports was a result of the inland waterway system in the United

A. 正确
B. 错误

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The speaker talks about the role of inland waterways in the nation's growth of America.

A. 正确 B. 错误

Which of the following statements is true about the relationship between the unemployment

Though inland waterways were important transportation system, they were soon replaced by the more convenient railroads.

It takes longer time to travel by river is one of the major reasons that the inland waterway system was unable to compete with other forms of transportation.

The decline of Atlantic seaports was a result of the inland waterway system in the United

A. 正确
B. 错误