A-A+
Birds may use their eyes to measureA．changes i
问题详情
Birds may use their eyes to measure
A．changes in temperature to help them migrate.
B．the position of the sun to help them migrate.
C．periods of light to help them migrate.
D．the distance they have traveled to help them migrate.
参考答案
正确答案：B
解析：本题考查细节理解。该题的考点在下面这句话中，“Birds and some insects use their eyes to measure and compare the position of the sun from different place．”所以选项B 为正确答案。
