听下面对话或独白.对话或独白后有几个小题.从题中所给的A.B.C三个选项中选出最佳选项.并标在试卷的相应位置.听每段对话或独白前.你将有时间阅读各个小题.每小题
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听下面对话或独白。对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟。
1.What is the main subject of thisconversation?
A. United States—Canadian agreements.
B.Unlimited growth in population.
C.Pollution in the Great Lakes.
2.What do people expect to happen to theGreat Lakes within the next generation?
A. They will have limited oxygensupplies.
B.They will increase in size.
C.They will be usable again.
试题答案
答案：1C2C
解析：| 听力原文 W: I haven’t seen you for a while. Haveyou been away? M: Yes, I just got back from vacation. Itook a tour around the Great Lakes. Have you ever been there? W: Oh, yes! When I was young, I lived inErie County, New York, and I used to go swimming in Lake Erie all the time. Wealso went to Lake Ontario in Canada. M: But I thought that Lake Erie was sopolluted that almost everything living in it had died. W: Fortunately, both the U.S.A. andCanada are taking measures to make them clean. In fact, all the Great Lakeswill be ninety percent improved. M: I’m glad to hear an environmentalsuccess story at last.
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