【正确答案】 B

【答案解析】[听力原文]
The Old Canada Road is a long lost trail between the Canadian province of Quebec and Maine in the northeast comer of the United States. Yes it really was lost and finding it again was a complex process that involved state of our technology: how the location of the roads was determined was very interesting. And I'll return to it as soon as I gave you a little background information. The road was begun in 1817, a few years before Maine even became a state. At the time Quebec was a major market for livestock, crops and fish. So a road to Quebec was seen by officials in Maine as necessary for trade. For about 20 years the movement of people and goods was mostly from Maine to Quebec, and then the trend reversed as thousands of Canadians immigrated to Maine to escape poor crops, the lack of jobs and the threat of disease. Besides its negative reasons major building projects in Maine also made the state very attractive for the Canadians who needed work. I should stress though that immigration during that period went in both directions. In fact the flow of people and goods went completely unhindered. There wasn't even a border post until around 1850. The people of the time saw Maine and Quebec as single region mainly because of the strong 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. This brings me back to the original topic.

What does the speaker say about the road between Maine and Quebec?

短文首先提到这条加拿大公路是一条加拿大魁北克与美国东北角缅因州之间的被遗忘了很长时间的小路。说话人用了很大篇幅介绍该路的背景信息：建于1817年，比缅因州成立还早一些年。当时魁北克是家畜、作物和鱼的主要市场，因此缅因州的官员觉得一条通往魁北克的道路对贸易来说是必要的。显然，道路是美国人建的，排除A；道路建于缅因州成立之前，排除D；C项短文没有提及，亦可排除；可知答案为B，建路的目的是为了促进贸易。

【正确答案】 B

【答案解析】[听力原文]
What is one reason Canadians began to immigrate to Maine during the 1800s?

短文提到有大约20年的时间人和商品的流通方向大都是从缅因州到魁北克，随后趋势逆转，数以千计的加拿大人移居到缅因州以躲避作物歉收、工作机会缺乏以及疾病威胁。除了这些消极原因，缅因州大部分的建设项目对于需要工作的加拿大人来说非常有吸引力。可见，工作机会是加拿大人移居缅因州的一个原因，故选B。

【正确答案】 D

【答案解析】[听力原文]
What subject is the speaker most likely to discuss next?

短文开头部分设了一个伏笔，说话人说加拿大老公路不见了，重新找到它是一个涉及技术水平的复杂的过程，如何定位公路是非常有趣的。说话人说在给出一些背景信息之后会回到这个话题，显然，说话人在介绍完背景信息后要讨论的就是如何重新定位这条公路，即介绍用于定位这条公路的技术，故选D。