题目内容
2.听第10段材料,回答第17至20题.17.What changes have happened in Anchorage?
A.There are more high buildings.B.There is no forest anymore.C.The city's size is reduced.
18.What is the main cause of these changes?
A.The discovery of oil.
B.The increased wealth.
C.The modern transportation.
19.What decision do Alaskans need to make?
A.How to build the oil pipeline.
B.How to protect nature.
C.How to achieve a win-win situation.
20.What will the man probably do?
A.Talk about Alaskans'decisions.
B.Take environmental science classes.
C.Give a lecture using PowerPoint.
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