答案：B

　　3．In order to survive，some golden eagles______.

　　A．may move to places where there is more food

　　B．must maintain a territory as large as 155 square kilometers

　　C．often fight with other golden eagles

　　D．hunt food or attack livestock separately

　　解析：细节理解题。根据第二段Some will migrate for food while others will not depend on the condition of their habitat可知，答案为A项。

　　答案：A

　　4．The whole course of incubating the golden eagle eggs takes______.

　　A．about three weeks

　　B．at least two months

　　C．more than a month

　　D．no more than two weeks

　　解析：推理判断题。根据第四段After 34 to 45 days，the young ones come out of their eggs可推断，答案为C项。

　　答案：C

　　B

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