题目：A．They change color every 50 minutes.B．They change color more quickly.C．They change co
A．They change color every 50 minutes.
B．They change color more quickly.
C．They change color more slowly.
D．They change color on the same schedule.
事实细节题 生物学家的实验表明：招潮蟹不受光的影响，在黑暗的环境里仍然很有规律地变换肤色。
