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【简答题】
下列函数中，既是奇函数，又在 上是减函数的是（ ） A． B． C． D．
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反馈参考答案：
举一反三
【单选题】一个人骑车由南向北行驶 , 这时有辆汽车也由南向北从他身旁疾驶而去 , 若以这辆汽车为参照物 , 此人 ( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
向北运动
B.
向南运动
C.
.静止
D.
运动方向无法确定
【单选题】听力原文： Although I think the United States generally has an excellent system of transporting people between cities that .are only a few hundred miles apart, a person commuting between Detroit and Chicag...
A.
Energy conservation.
B.
A new kind of transportation.
C.
Strip cities.
D.
Advantages o{ air transportation over rail roads.
【单选题】听力原文： Although I think the United States generally has an excellent system of transportation, I don' t think that it does a good job of transporting people between cities that are only a few hundred m...
A.
Energy conservation.
B.
Transportation of the future.
C.
Strip cities:
D.
Advantages of air transportation over railroads.
【单选题】听力原文： Although I think the United States generally has an excellent system of transportation, I do not think that it does a good job of transporting people between cities that are only a few hundred m...
A.
Strip-cities.
B.
Transportation of the future.
C.
Energy conservation.
D.
Advantages of air transportation over railroads.
【简答题】I think transporting the goods by will be more flexible.
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