题目内容
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提问人:网友siasren
发布时间:2022-01-07
[主观题]
Why did one scientist expose birds to artificial daylight?A.To test the relationship betwe
en daylight and a disease of the glands common to birds.B.To test the relationship between daylight and migration.C.To test the relationship between migration and temperature.D.To test the relationship between daylight and changes in the season.
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