GWD31套-15-23

Q23:

Seldom more that 40 feet wide and 12 feet deep, but it ran 363 miles across the rugged wilderness of upstate New York, the Erie Canal connected the Hudson River at Albany to the Great Lakes at Buffalo, providing the port of New York City with a direct water link to the heartland of the North American continent.

1. Seldom more than 40 feet wide and 12 feet deep, but it ran 363 miles across the rugged wilderness of upstate New York, the Erie Canal connected
2. Seldom more than 40 feet wide or 12 feet deep but running 363 miles across the rugged wilderness of upstate New York, the Erie Canal connected
3. It was seldom more than 40 feet wide and 12 feet deep, and ran 363 miles across the rugged wilderness of upstate New York, but the Erie Canal, connecting
4. The Erie Canal was seldom more than 40 feet wide or 12 feet deep and it ran 363 miles across the rugged wilderness of upstate New York, which connected
5. The Erie Canal, seldom more than 40 feet wide and 12 feet deep, but running 363 miles across the rugged wilderness of upstate New York, connecting

  the answer is B,while I choose A,why "or" and "but running"?

我觉得seldom 是否定的意思,所以是or 而不是and

而but后面的是另外一个分词短语(和seldom 短语有转折关系)修饰主句的主语Erie Canal.如果你觉得but是连词连接2个句子的话,我觉得这2个句子的意思没有转折的关系,而且我也很少看到but连接2个句子时,but在第一个句子.

个人观点.抛砖引玉.

新东方老师讲否定只有no,not阿，在下纯属犬儒主义者，望赐教。