填空题

Color blindness is another eye defect (疾病) that many people have. People who are color blind cannot (11) the difference between certain colors. Most color blind people can only see two (12) colors of the rainbow and confuse other colors. Very few people are completely color blind. (13) other eye defects, color blindness cannot be cured. Although we can’t cure many eye defects, we can (14) our eyes. People are always saying that carrots are good for our eyes. This is because carrots help our (15) make Vitamin A (维生素 A) which helps our eyes work. People often joke by saying that this is why rabbits don’t wear glasses.