• 2022-06-05
    People of ancient Egypt and Europeans of the Middle Ages ().
    A: both worshipped black cats
    B: both feared black cats
    C: thought black cats could bring good luck
    D: felt very different about black cats
  • D

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      21.Some people believe that black cats and the number 13 are ___________. A: unfair B: unnatural C: unlucky D: unhappy

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      In some western countries, a ______ belief is that black cats will bring misfortune to people. A: superstar B: superpower C: superstitious D: superstition

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      () was considered to be evil During the Black Death A: dogs B: birds C: cats D: pigs

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      On the way to the wedding, seeing ____ is considered good luck.( ) A: a pig, a lizard B: an open grave C: spiders, black cats D: monks, nuns

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      When white cat cross to black cat, F1 is white cat. F1 cats cross each other, and the proportion of white, black and brown cats in F2 is 9:3:4. What is the reason for this? ( ) A: Dominant epistasis B: Additive effect C: Recessive epistasis D: Suppression