Looking back Off my childhood,I am convinced【C1】______naturalists are born and not made.A1though we were all brought【C2】______in

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问题   Looking back Off my childhood,I am convinced【C1】______naturalists are born and not made.A1though we were all brought【C2】______in the same way,my brothers and sisters soon gave up their pressed flowers and insects.【C3】______them,I had no ear【C4】______music and languages,I was not an early reader and I could not do mental arithmetic.Before World War 1 we【C5】______our summer holidays in Hungary.I have only the memory of the house we lived【C6】______,0f my room and my toys.I can hardly【C7】______clearly the large family of grandparents,aunts,uncles and cousins who gathered【C8】______door.But I do have a clear memory ofthe.dogs,the farm【C9】______,the local birds and,【C10】______all,the insects.
  I am  a【C11】______,not a scientist.I have a strong【C12】______of the natural world,and my enthusiasm has led me into varied investigations.I love discussing my favorite topics and enjoy【C13】______the midnight oil【C14】______reading about other people’s observation and discoveries.Then【C15】______happens that brings these observations together【C16】______my conscious mind.Suddenly you fancy(想象),you see the answer【C17】______the riddle,and books,of which some might honor with the title of scientific research.
    But curiosity,a keen eye,a good memory and enjoyment of the animal and plant world do not make a scientist;one of the outstanding and essential【C18】______required is self-discipline,a quality I lack.A scientist requires not only【C19】______but also hard training and a goal.A scientist,up to a point,can be made.A naturalist【C20】______.If you can combine the two,you get the best both worlds.
【C1】

选项 A、it
B、that
C、what
D、of

答案B

解析 根据句子意思知道需要用宾语从句引导词,此处选B。
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