According to one theory, when the glaciers disappeared, birds ____. The author states that birds left the tropics because _

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问题 According to one theory, when the glaciers disappeared, birds ______.
The author states that birds left the tropics because ______.

选项 A、there was not enough food there in the winter
B、there were too many birds
C、there were too many glaciers
D、there was too much daylight

答案B

解析本题依据是第二段前两句，关键词语是overpopulated，意思是"数量过多"。

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本试题收录于： GCT工程硕士（英语）题库专业硕士分类

GCT工程硕士（英语）

专业硕士

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According to one theory, when the glaciers disappeared, birds ____. The author states that birds left the tropics because _

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Childrenwouldplaywithfireuntiltheirhandswereburntawayif______.Fearshouldbeusedproperlybecause______.

Guest:Clerk:Certainly.Doyouhaveareservation?Guest:Yes.ThenameisMorales.Mr.andMrs.Morales.Clerk:Hereweare.Fo

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()液态石油中通常溶有相当数量的气态烃和氧化物。

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班主任对学生个体的了解包括()。

在今年的某国际物理学奖获得者中，有一位美国人、一位中国人、一位日本人；有三位获得者之间有相互合作的关系，其中有一位是女性获得者；美国的获得者从不与他人合作。据此，可以推出：

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According to one theory, when the glaciers disappeared, birds ____. The author states that birds left the tropics because _

Childrenwouldplaywithfireuntiltheirhandswereburntawayif.Fearshouldbeusedproperlybecause.

Theauthorthinksthatscienceandtechnology__。Theauthorbelievesthatourcurrentproblemscanbebettersolvedby_

Theauthorthinksthatscienceandtechnology。Wearenotsatisfiedbecause.