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【判断题】
在明亮的常光环境中，视锥细胞的感光色素的再生是明适应的逆过程，但比较缓慢，至少需要5 秒以上才能完全恢复。
A.
正确
B.
错误
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【单选题】Questions 57 to 61 are based on the following passage. The human criterion for perfect vision is 20/20 for reading the standard lines on a Snellen eye chart without a hitch. The score is determined by...
A.
It can identify small items more quickly than we do.
B.
It can see at a longer distance than we do.
C.
It has more cones in the retina than we do.
D.
h has bigger eyes than we do.
相关题目：
【单选题】Questions 57 to 61 are based on the following passage. The human criterion for perfect vision is 20/20 for reading the standard lines on a Snellen eye chart without a hitch. The score is determined by...
A.
It can identify small items more quickly than we do.
B.
It can see at a longer distance than we do.
C.
It has more cones in the retina than we do.
D.
h has bigger eyes than we do.
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