A．It was built by the Canadians．
B．It was built to facilitate trade．
C．The path for the road was extremely difficult to clear．
D．Hostilities between Canada and the US caused construction delays．
参考答案B
解析:
The Old Canada Road is a long lost trail between the Canadian province of Quebec and Maine in thenortheast corner of the United States.Yes it really was lost and finding it again was a complex process thatinvolved state of our technology: how the location of the roads was pinpointed was very interesting.
The road was begun in 1817, a few years before Maine even became a state.At the time Quebec was amajor market for livestock, crops and fish.( 23 ) So a road to Quebec was seen by officials in Maine asnecessary for trade.(24) For about 20 years the movement of people and goods was mostly from Maine toQuebec, and then the trend reversed as thousands of Canadians immigrated to Maine to escape poor crops, thelack of jobs and the threat of disease.
Besides its negative reasons, major building projects in Maine also made the state very attractive for theCanadians Who needed work.I should stress though that immigration during that period went in bothdirections.In fact, the flow of people and goods went completely unhindered.There wasn't even a border postuntil around 1850.(25) The people of the time saw Maine and Quebec as single region mainly because of thestrong French influence which is still evident in Maine today.
Eventually the road fell into disuse as a major railway was completed.Finally people simply forgot about it and that's how it came to be lost.
What does the speaker say about the road between Ouebec and Maine?
B.【精解】根据定位句可知，修路是为了促进双边贸易的发展，故答案为B.