题目内容:
WhyDid one scientist expose birds to artificialDaylight?
A.To test the relationship betweenDaylight and aDisease of the glands common tobords B.To test the relationship betweenDaylight and migration.
C.To test the relationship between migration and temperature.
D.To test the relationship betweenDaylight and changes in the season.
参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析: