2. 外语
  3. A special research team from the local medical center【C1】______experiments on completely blind babies. The babies to be tested o

A special research team from the local medical center【C1】______experiments on completely blind babies. The babies to be tested o

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问题     A special research team from the local medical center【C1】______experiments on completely blind babies. The babies to be tested on lived at home with their mothers of families. The research workers would visit the babies and closely【C2】______the development of their senses and behavior every two weeks.
    In most【C3】______, the research workers tested the responses of the blind babies to different stimuli (刺激) common in the family environment. Generally speaking,a【C4】______baby would react with smiles and laughter to tickling(瘙痒) ,to the voice of a relative,and to hugging(拥抱)from his family. His reactions were swift.【C5】______, most of the blind babies, according to the experiments, responded to stimuli impassively. In fact,they were indifferent to【C6】______sound. But【C7】______some special situations, some of them were able to【C8】______ to the sound of their mothers with a smile. Usually, their response was very【C9】______ The tests were done about nine months;they【C10】______ when the blind babies were one month old and ended when they were ten months old.
【C5】
选项 A、While
B、Moreover
C、However
D、Therefore
答案C
解析 本题考查连接词的选择。while除了表示时间，还可以表示对比关系，意为“而”；moreover表示递进关系，意为“再者，此外”；however表示转折关系，意为“然而，可是”；therefore表示因果关系，意为“因此”。根据上下文的逻辑关系，故选C。
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