A-A+
In his observation the French scientist notic
问题详情
In his observation, the French scientist noticed that the leaves of a certain plant maintained its open-ing-and-closing cycles_____.
A．even when it was kept in a murky place all day
B．even if it was placed in the moonlight
C．even when he was observing it from a dark place
D．even during the night time此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：细节题。第二段第三句话说“…that one of his plants opened its leaves at the same time every morning，and closed them at the same time every night．The plant did this even when he kept it in adark place all the time．”这与A符合。
