Which of the following disease is also known as father of public health? ()
Anthrax
B. Cholera
C. Small pox
D. Malaria
查看答案
What's your major
A. MBBS
B. PHARMERCY
What's your gender
A. male
B. female
The word “that” in line 10 refers to
A. foveae
B. areas of the eye
C. cones
D. visual distinctions
According to the passage, why might birds and animals consider humans very visually handicapped?
A. humans can’t see very well in either air or water
B. human eyes are not as well suited to our needs
C. the main outstanding feature of human eyes is color vision
D. human eyes can’t do what their eyes can do