下载APP
举一反三
【单选题】视杆细胞系统
A.
对光敏感度高，有色觉，分辩力弱
B.
对光敏感度低，有色觉，分辩力高
C.
对光敏感度高，无色觉，分辩力弱
D.
对光敏感度低，有色觉，分辩力弱
E.
对光敏感度低，无色觉，分辨力高
【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.