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题目内容
（大学英语第二册）
14. According to the passage, dogs and cats.
A. can see colors as well as human beings
B. as well as human beings cannot see some colors
C. have less rods than human beings
D. have fewer cones than human beings
A. can see colors as well as human beings
B. as well as human beings cannot see some colors
C. have less rods than human beings
D. have fewer cones than human beings
参考答案