According to the passage, bats and adult owls cannot see colors. A. because they hunt at night B. because they cannot see light C. because they have no cones and rods D. because they have no cones

According to the passage, bats and adult owls cannot see colors.
A. because they hunt at night
B. because they cannot see light
C. because they have no cones and rods
D. because they have no cones

出自：湖南大学-大学英语2

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